Common Weakness Enumeration
CWE-835
AllowedLoop with Unreachable Exit Condition ('Infinite Loop')
Abstraction: Base · Status: Incomplete
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
1220 vulnerabilities reference this CWE, most recent first.
CVE-2026-85715 (GCVE-0-2026-85715)
Vulnerability from cvelistv5 – Published: 2026-09-17 15:33 – Updated: 2026-09-17 15:54
VLAI
EPSS
VEX
Title
ExifReader: DoS via Crafted HEIC/AVIF iloc Box - Memory Exhaustion
Summary
ExifReader is a JavaScript Exif information parser. Prior to 4.41.1, ExifReader parses attacker-controlled HEIC or AVIF ISO-BMFF files in getItems() within src/image-header-iso-bmff-iloc.js and trusts iloc itemCount and extentCount values while allocating an extent object for every nested-loop iteration. When offsetSize, lengthSize, baseOffsetSize, and indexSize are zero, the extent fields consume no input bytes and the buffer offset does not advance, but the parser can still allocate up to itemCount multiplied by extentCount objects without an allocation budget. A small malicious iloc box can therefore cause hundreds of megabytes of heap growth or exhaust system memory, terminating a Node.js process and denying service to web, desktop, or mobile applications that parse untrusted images. The zero field widths are valid ISO-BMFF values indicating absent fields, so the vulnerable parser must bound work rather than relying on offset advancement. The issue is fixed in version 4.41.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 15:54 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/mattiasw/ExifReader/security/a… | x_refsource_CONFIRM |
| https://github.com/mattiasw/ExifReader/commit/17b… | x_refsource_MISC |
| https://github.com/mattiasw/ExifReader/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mattiasw | ExifReader |
Affected:
< 4.41.1
|
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CVE-2026-84997 (GCVE-0-2026-84997)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:07 – Updated: 2026-09-16 14:46
VLAI
EPSS
VEX
Title
react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU
Summary
react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. From 0.6.0 until 1.11.1, React\Http\Io\ChunkedDecoder could enter an infinite loop while processing a malformed Transfer-Encoding: chunked body because handleData required its buffer to shrink on every iteration. An incomplete terminal-chunk trailer without CRLF left the buffer unchanged after strpos returned false, and exactly two non-CRLF bytes after a completed non-terminal chunk bypassed both the error and wait guards. The affected decoder processes request bodies for React\Http\HttpServer and response bodies for React\Http\Browser, allowing a malicious client to freeze a server or a malicious or compromised server to freeze a client. A reverse proxy that normalizes inbound requests may protect the server direction but does not protect outbound Browser requests. This issue is fixed in version 1.11.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 14:46 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/reactphp/http/security/advisor… | x_refsource_CONFIRM |
| https://github.com/reactphp/http/commit/b6d468879… | x_refsource_MISC |
| https://github.com/reactphp/http/releases/tag/v1.11.1 | x_refsource_MISC |
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CVE-2026-84446 (GCVE-0-2026-84446)
Vulnerability from cvelistv5 – Published: 2026-09-18 15:54 – Updated: 2026-09-21 20:50
VLAI
EPSS
VEX
Title
libheif: Sequence decode timing-table initialization allows non-terminating loops and unbounded memory, bypassing max_sequence_frames
Summary
libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.23.2, crafted HEIF sequence timing and edit-list data can make Track::init_sample_timing_table() compute a logical m_num_output_samples value that exceeds the uint32_t counters used by Track_Visual::decode_next_image_sample() and Track::get_next_sample_raw_data(). The resulting comparison can never reach the oversized output count, causing non-terminating decode or raw-sample loops and bypassing max_sequence_frames. The same sequence path repeatedly calls Box_stts::get_sample_duration() and allocates Chunk::m_sample_ranges and Track::m_presentation_timeline outside MemoryHandle accounting, allowing severe CPU and memory exhaustion from a small file. This issue is fixed in version 1.23.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 20:13 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/strukturag/libheif/security/ad… | x_refsource_CONFIRM |
| https://github.com/strukturag/libheif/commit/3a7a… | x_refsource_MISC |
| https://github.com/strukturag/libheif/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strukturag | libheif |
Affected:
< 1.23.2
|
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CVE-2026-84309 (GCVE-0-2026-84309)
Vulnerability from cvelistv5 – Published: 2026-09-01 19:58 – Updated: 2026-09-02 13:41
VLAI
EPSS
VEX
Title
pypdf: Possible infinite loop for TreeObject.insert_child
Summary
pypdf is a free and open-source pure-python PDF library. Prior to 6.16.0, an attacker can craft a PDF whose cyclic tree structure causes pypdf/generic/_data_structures.py TreeObject.insert_child to follow /Next links indefinitely when a writing code path inserts a child, producing an infinite loop. This issue is fixed in version 6.16.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 13:39 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/py-pdf/pypdf/security/advisori… | x_refsource_CONFIRM |
| https://github.com/py-pdf/pypdf/pull/3964 | x_refsource_MISC |
| https://github.com/py-pdf/pypdf/commit/c9ba557d56… | x_refsource_MISC |
| https://github.com/py-pdf/pypdf/releases/tag/6.16.0 | x_refsource_MISC |
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CVE-2026-82605 (GCVE-0-2026-82605)
Vulnerability from cvelistv5 – Published: 2026-08-31 02:15 – Updated: 2026-08-31 22:03
VLAI
EPSS
VEX
Title
BareBones BBEdit Lasso Language Tokenizer infinite loop
Summary
A vulnerability has been found in BareBones BBEdit up to 15.5.5. The affected element is an unknown function of the component Lasso Language Tokenizer. Such manipulation leads to infinite loop. The attack can be executed remotely. Upgrading to version 16.0 is sufficient to fix this issue. The affected component should be upgraded.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 19:54 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/397107 | vdb-entry |
| https://vuldb.com/vuln/397107/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-82605 | third-party-advisory |
| https://vuldb.com/submit/892840 | third-party-advisory |
| https://ciphersecuritylabs.com/research/articles/… | related |
| https://www.barebones.com/support/bbedit/notes-16… | related |
| https://www.barebones.com/store/bbedit_upgrades.html | patch |
Impacted products
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CVE-2026-82579 (GCVE-0-2026-82579)
Vulnerability from cvelistv5 – Published: 2026-08-31 01:07 – Updated: 2026-08-31 16:05
VLAI
EPSS
VEX
Title
AshAi tool loop never terminates when all tool calls are filtered out, enabling denial of service
Summary
Loop with Unreachable Exit Condition (Infinite Loop) vulnerability in ash-project ash_ai allows an attacker who can influence a model's output to hang the tool loop and drive unbounded, repeated model requests.
AshAi.ToolLoop classifies a model response of :tool_calls, then filters the calls through normalize_tool_calls/2 and unprocessed_tool_calls/2. Both can empty the list: a call missing a valid name, or one reusing a tool_call_id that already has a result in history, is dropped. With an empty list the loop appended nothing and recursed with a byte-identical message list, so the conversation never advanced and the same request was re-sent every iteration. Under the supported max_iterations: :infinity this never terminated; otherwise it exhausted the full budget. Prompt-injected content can make the model re-emit a spent tool_call_id. The fix treats an empty post-filter list as terminal.
This issue affects ash_ai: from 0.6.0 before 1.0.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:05 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash_ai/security/ad… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-82579.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-82579 | related |
| https://github.com/ash-project/ash_ai/commit/5332… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash_ai |
Affected:
0.6.0 , < 1.0.0
(semver)
cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:* |
|
| ash-project | ash_ai |
Affected:
bc2122f78fca6c11d8ec2b9ac53148ec17476460 , < 53325fdab90afab628c6a53232ef2a9001580bd9
(git)
cpe:2.3:a:ash-project:ash_ai:*:*:*:*:*:*:*:* |
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CVE-2026-82560 (GCVE-0-2026-82560)
Vulnerability from cvelistv5 – Published: 2026-09-19 15:15 – Updated: 2026-09-21 18:38
VLAI
EPSS
VEX
Title
Pod::Text versions before 6.1.1 for Perl allow CPU and memory exhaustion formatting a POD document whose =over nesting drives the margin to the output width
Summary
Pod::Text versions before 6.1.1 for Perl allow CPU and memory exhaustion formatting a POD document whose =over nesting drives the margin to the output width.
Each =over adds its indent to the margin, which wrap() subtracts from the output width to get the space available for text. When that space reaches zero, the line-splitting substitution matches the empty string, and the loop consumes no input while appending the margin padding on every pass.
Formatting an attacker-supplied POD document never returns, and the output grows until memory is exhausted.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 18:38 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
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CVE-2026-81885 (GCVE-0-2026-81885)
Vulnerability from cvelistv5 – Published: 2026-09-22 15:13 – Updated: 2026-09-25 23:31
VLAI
EPSS
VEX
Title
radare2: Infinite relocation-chain loop causes denial of service in radare2 NE parser
Summary
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's NE relocation fixup-chain parser was vulnerable because the NE relocation parser followed fixup chains without an active iteration limit or cycle detection. The vulnerability is triggered by opening a crafted NE executable whose in-bounds relocation entry points back to itself instead of reaching 0xffff. The parser repeatedly processed the same relocation and allocated another relocation object on each iteration. This can cause denial of service through continuous CPU and memory consumption. This issue is fixed in version 6.2.0.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 23:30 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/radareorg/radare2/security/adv… | x_refsource_CONFIRM |
| https://github.com/radareorg/radare2/issues/26225 | x_refsource_MISC |
| https://github.com/radareorg/radare2/pull/26192 | x_refsource_MISC |
| https://github.com/radareorg/radare2/commit/93d79… | x_refsource_MISC |
| https://github.com/radareorg/radare2/releases/tag/6.2.0 | x_refsource_MISC |
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CVE-2026-81876 (GCVE-0-2026-81876)
Vulnerability from cvelistv5 – Published: 2026-09-16 18:48 – Updated: 2026-09-17 14:02
VLAI
EPSS
VEX
Title
HAPI FHIR: SHCParser DEFLATE infinite loop causes denial of service
Summary
HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.12, SHCParser in org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/SHCParser.java can enter an infinite loop while processing attacker-controlled Smart Health Card JWT content whose header contains zip: "DEF" and whose raw-DEFLATE payload is empty or truncated. SHCParser.decodeJWT() reaches SHCParser.inflate(), where Inflater.inflate() can return zero while Inflater.finished() remains false and Inflater.needsInput() is true. The loop also lacks an Inflater.needsDictionary() termination check, SHCParser.decompress() contains the same zero-progress pattern, and ResourceChecker.java can reach SHC parsing during file-format detection. A malformed validation request can pin a JVM worker thread indefinitely, and concurrent requests can exhaust all validation workers. This issue is fixed in version 6.9.12.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 14:02 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/hapifhir/org.hl7.fhir.core/sec… | x_refsource_CONFIRM |
| https://github.com/hapifhir/org.hl7.fhir.core/pull/2493 | x_refsource_MISC |
| https://github.com/hapifhir/org.hl7.fhir.core/com… | x_refsource_MISC |
| https://github.com/hapifhir/org.hl7.fhir.core/com… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| hapifhir | org.hl7.fhir.core |
Affected:
< 6.9.12
|
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CVE-2026-80489 (GCVE-0-2026-80489)
Vulnerability from cvelistv5 – Published: 2026-09-15 10:51 – Updated: 2026-09-15 12:22
VLAI
EPSS
VEX
Title
EUC_JISX0213 decoding may hang on crafted input
Summary
Converting crafted EUC_JISX0213 input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.3 to 2.44 may result in the converter making no progress, causing the calling application to hang.
Some EUC_JISX0213 sequences decode to two code points. If the output buffer has room for only the first one, the converter stores the second in the conversion state and returns E2BIG, but it never clears that pending character after emitting it on the next call. The converter then keeps emitting the pending character without consuming further input, so an application that retries the conversion loops forever. The input must be attacker controlled and the application must convert it with an output buffer small enough to split the two code points. Only the EUC_JISX0213 character set is affected, which is not commonly used. The related defect in SHIFT_JISX0213 converter is tracked separately as CVE-2026-77117.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 12:21 UTC
CWE
- CWE-835 - Loop with unreachable exit condition ('infinite loop')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://sourceware.org/bugzilla/show_bug.cgi?id=34568 | issue-tracking |
| https://sourceware.org/git/?p=glibc.git;a=blob_pl… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The GNU C Library | glibc |
Affected:
2.3 , ≤ 2.44
(custom)
|
Date Public
2026-08-26 04:00
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"format": "CVSS",
"scenarios": [
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"value": "GENERAL"
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],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "CWE-835 Loop with unreachable exit condition (\u0027infinite loop\u0027)",
"lang": "en",
"type": "CWE"
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],
"providerMetadata": {
"dateUpdated": "2026-09-15T10:51:59.347Z",
"orgId": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
"shortName": "glibc"
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"references": [
{
"tags": [
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"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=34568"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0020"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "EUC_JISX0213 decoding may hang on crafted input",
"x_generator": {
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},
"cveMetadata": {
"assignerOrgId": "3ff69d7a-14f2-4f67-a097-88dee7810d18",
"assignerShortName": "glibc",
"cveId": "CVE-2026-80489",
"datePublished": "2026-09-15T10:51:59.347Z",
"dateReserved": "2026-08-26T13:27:58.984Z",
"dateUpdated": "2026-09-15T12:22:30.814Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.