CVE-2021-22911 (GCVE-0-2021-22911)
Vulnerability from cvelistv5 – Published: 2021-05-27 11:14 – Updated: 2024-08-03 18:58Summary
A improper input sanitization vulnerability exists in Rocket.Chat server 3.11, 3.12 & 3.13 that could lead to unauthenticated NoSQL injection, resulting potentially in RCE.
Severity
9.8 (Critical)
CWE
- CWE-75 - Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) (CWE-75)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://hackerone.com/reports/1130721 | x_refsource_MISC |
| http://packetstormsecurity.com/files/162997/Rocke… | x_refsource_MISC |
| http://packetstormsecurity.com/files/163419/Rocke… | x_refsource_MISC |
| https://blog.sonarsource.com/nosql-injections-in-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Rocket.Chat server |
Affected:
Fixed in: 3.13.2, 3.12.4, 3.11.4
|
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: d7c00495-460b-4ce3-b411-069ff420d087
Exploited: Yes
Timestamps
First Seen: 2025-10-03
Asserted: 2025-10-03
Scope
Notes: A improper input sanitization vulnerability exists in Rocket.Chat server 3.11, 3.12 & 3.13 that could lead to unauthenticated NoSQL injection,... | Affected: Rocket.Chat / Rocket.Chat server | CVSS: 9.8 (CRITICAL) | EPSS: 0.95242 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | A improper input sanitization vulnerability exists in Rocket.Chat server 3.11, 3.12 & 3.13 that could lead to unauthenticated NoSQL injection,... |
| Cve Id | CVE-2021-22911 |
| Vendor | Rocket.Chat |
| Ghsa Id | None |
| Product | Rocket.Chat server |
| Added Date | 2025-10-03T00:00:00.000Z |
| Cvss Score | 9.8 |
| Epss Score | 0.95242 |
| Previous Ids | |
| Cvss Severity | CRITICAL |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.99865 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2021-22911 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-10-02 09:09 CEST
| Updated: 2026-10-02 09:09 CEST
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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