Common Weakness Enumeration
CWE-407
Allowed-with-ReviewInefficient Algorithmic Complexity
Abstraction: Class · Status: Incomplete
An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
395 vulnerabilities reference this CWE, most recent first.
CVE-2026-13149 (GCVE-0-2026-13149)
Vulnerability from cvelistv5 – Published: 2026-06-30 08:30 – Updated: 2026-07-08 11:38
VLAI
EPSS
VEX
Summary
brace-expansion through 5.0.6 is vulnerable to denial of service. The expand() function exhibits exponential-time complexity in the number of consecutive non-expanding '{}' brace groups. An attacker who passes a crafted string to expand(), directly or transitively, can cause significant CPU consumption and event-loop blocking. The max option does not mitigate this, as it bounds the output size rather than the recursion work.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 12:43 UTC
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| juliangruber | brace-expansion |
Affected:
0 , ≤ 5.0.6
(semver)
|
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CVE-2026-13064 (GCVE-0-2026-13064)
Vulnerability from cvelistv5 – Published: 2026-07-22 19:17 – Updated: 2026-07-23 19:09
VLAI
EPSS
VEX
Title
MongoDB $jsonSchema Query Operator Excessive CPU Consumption Leading to Denial of Service
Summary
Certain query operations involving deeply nested $jsonSchema constructs can trigger disproportionate CPU consumption in affected MongoDB deployments, potentially leading to resource exhaustion. The resulting CPU-bound operation cannot be interrupted through standard administrative controls.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 19:09 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | MongoDB Server |
Affected:
8.0 , < 8.0.28
(semver)
Affected: 8.2.0 , < 8.2.12 (semver) Affected: 8.3.0 , < 8.3.7 (semver) |
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CVE-2026-12882 (GCVE-0-2026-12882)
Vulnerability from cvelistv5 – Published: 2026-09-14 10:30 – Updated: 2026-09-14 11:19
VLAI
EPSS
VEX
Title
Mattermost Markdown autolink parsing denial of service
Summary
Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to parse Markdown autolinks with unmatched trailing closing parentheses in linear time, which allows an authenticated user with permission to create posts to cause excessive server CPU consumption and degrade availability for other users via specially crafted post or message attachment content. Mattermost Advisory ID: MMSA-2026-00703
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 11:02 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.9.0 , ≤ 11.9.0
(semver)
Affected: 11.8.0 , ≤ 11.8.4 (semver) Affected: 11.7.0 , ≤ 11.7.7 (semver) Affected: 10.11.0 , ≤ 10.11.22 (semver) Unaffected: 11.10.0 Unaffected: 11.9.1 Unaffected: 11.8.5 Unaffected: 11.7.8 Unaffected: 10.11.23 |
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CVE-2026-11312 (GCVE-0-2026-11312)
Vulnerability from cvelistv5 – Published: 2026-06-05 00:30 – Updated: 2026-06-05 13:12
VLAI
EPSS
VEX
Title
bytedance InfiniStore KV Map infinistore.h purge_kv_map algorithmic complexity
Summary
A vulnerability was found in bytedance InfiniStore up to 0.2.33. The impacted element is the function purge_kv_map in the library /src/infinistore.h of the component KV Map Handler. Performing a manipulation results in inefficient algorithmic complexity. The attack requires a local approach. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-05 13:12 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/368398 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/368398/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-11312 | third-party-advisory |
| https://vuldb.com/submit/832348 | third-party-advisory |
| https://github.com/bytedance/InfiniStore/issues/200 | exploitissue-tracking |
| https://github.com/bytedance/InfiniStore/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bytedance | InfiniStore |
Affected:
0.2.0
Affected: 0.2.1 Affected: 0.2.2 Affected: 0.2.3 Affected: 0.2.4 Affected: 0.2.5 Affected: 0.2.6 Affected: 0.2.7 Affected: 0.2.8 Affected: 0.2.9 Affected: 0.2.10 Affected: 0.2.11 Affected: 0.2.12 Affected: 0.2.13 Affected: 0.2.14 Affected: 0.2.15 Affected: 0.2.16 Affected: 0.2.17 Affected: 0.2.18 Affected: 0.2.19 Affected: 0.2.20 Affected: 0.2.21 Affected: 0.2.22 Affected: 0.2.23 Affected: 0.2.24 Affected: 0.2.25 Affected: 0.2.26 Affected: 0.2.27 Affected: 0.2.28 Affected: 0.2.29 Affected: 0.2.30 Affected: 0.2.31 Affected: 0.2.32 Affected: 0.2.33 cpe:2.3:a:bytedance:infinistore:*:*:*:*:*:*:*:* |
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CVE-2026-8594 (GCVE-0-2026-8594)
Vulnerability from cvelistv5 – Published: 2026-05-30 15:32 – Updated: 2026-06-01 15:06
VLAI
EPSS
VEX
Title
Text::LineFold versions through 2019.001 for Perl duplicate the output based on the number of special break characters
Summary
Text::LineFold versions through 2019.001 for Perl duplicate the output based on the number of special break characters.
Text::LineFold splits the input string by specific line break characters (such as VT, FF and others) into segments, but applies the break function to the entire string, not just the segment.
A side effect of this is that the full input can be duplicated for each segment. Besides being incorrect, this can lead to unexpected resource consumption and possible denial of service.
Note that Text::LineFold is part of the Unicode-LineBreak distribution, which may have a higher version number than the module.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 15:06 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NEZUMI | Text::LineFold |
Affected:
0 , ≤ 2019.001
(custom)
|
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CVE-2026-6042 (GCVE-0-2026-6042)
Vulnerability from cvelistv5 – Published: 2026-04-10 09:00 – Updated: 2026-04-10 15:54
VLAI
EPSS
VEX
Title
musl libc GB18030 4-byte Decoder iconv.c iconv algorithmic complexity
Summary
A security flaw has been discovered in musl libc up to 1.2.6. Affected is the function iconv of the file src/locale/iconv.c of the component GB18030 4-byte Decoder. Performing a manipulation results in inefficient algorithmic complexity. The attack must be initiated from a local position. To fix this issue, it is recommended to deploy a patch.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-10 15:44 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/356620 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/356620/cti | signaturepermissions-required |
| https://vuldb.com/submit/796352 | third-party-advisory |
| https://www.openwall.com/lists/oss-security/2026/… | related |
| https://www.openwall.com/lists/oss-security/2026/… | patch |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
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CVE-2026-3988 (GCVE-0-2026-3988)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:33 – Updated: 2026-03-25 17:21
VLAI
EPSS
VEX
Title
Inefficient Algorithmic Complexity in GitLab
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-25 17:21 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/work_items… | |
| https://hackerone.com/reports/3597342 | technical-descriptionexploitpermissions-required |
| https://about.gitlab.com/releases/2026/03/25/patc… |
Impacted products
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CVE-2026-3276 (GCVE-0-2026-3276)
Vulnerability from cvelistv5 – Published: 2026-06-03 14:29 – Updated: 2026-08-13 00:28
VLAI
EPSS
VEX
Title
Potential DoS via quadratic complexity in unicodedata.normalize()
Summary
unicodedata.normalize() can take excessive CPU time when processing
specially crafted Unicode input containing long runs of combining characters
with alternating Canonical Combining Class values.
This affects all normalization forms.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 17:27 UTC
CWE
Assigner
References
12 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.10.21
(python)
Affected: 3.11.0 , < 3.11.16 (python) Affected: 3.12.0 , < 3.12.14 (python) Affected: 3.13.0 , < 3.13.14 (python) Affected: 3.14.0 , < 3.14.6 (python) Affected: 3.15.0a1 , < 3.15.0b2 (python) |
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CVE-2026-1285 (GCVE-0-2026-1285)
Vulnerability from cvelistv5 – Published: 2026-02-03 14:35 – Updated: 2026-02-03 16:22
VLAI
EPSS
VEX
Title
Potential denial-of-service vulnerability in django.utils.text.Truncator HTML methods
Summary
An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28.
`django.utils.text.Truncator.chars()` and `Truncator.words()` methods (with `html=True`) and the `truncatechars_html` and `truncatewords_html` template filters allow a remote attacker to cause a potential denial-of-service via crafted inputs containing a large number of unmatched HTML end tags.
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Django would like to thank Seokchan Yoon for reporting this issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 16:22 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://docs.djangoproject.com/en/dev/releases/se… | vendor-advisory |
| https://groups.google.com/g/django-announce | mailing-list |
| https://www.djangoproject.com/weblog/2026/feb/03/… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| djangoproject | Django |
Affected:
6.0 , < 6.0.2
(semver)
Unaffected: 6.0.2 (semver) Affected: 5.2 , < 5.2.11 (semver) Unaffected: 5.2.11 (semver) Affected: 4.2 , < 4.2.28 (semver) Unaffected: 4.2.28 (semver) |
Date Public
2026-02-03 08:00
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CVE-2025-66382 (GCVE-0-2025-66382)
Vulnerability from cvelistv5 – Published: 2025-11-28 00:00 – Updated: 2026-07-14 12:43
VLAI
EPSS
VEX
Summary
In libexpat through 2.7.3, a crafted file with an approximate size of 2 MiB can lead to dozens of seconds of processing time.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-03 16:08 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| libexpat project | libexpat |
Affected:
0 , ≤ 2.7.5
(semver)
cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* |
|
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V4.0
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.