http-cache-semantics < 4.1.1 — Regular Expression Denial of Service (ReDoS)
CVE-2022-25881Published · Updated Action summary
Affected: ≤2.7.3Update to 2.7.4 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:NIntegrity- None
A:LAvailability- Low
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Simple Local Avatars simple-local-avatars
- Affected≤ 2.7.3
- Patched in2.7.4
Update to 2.7.4 or newer.
You are affected if you run ≤ 2.7.3. Version 2.7.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Simple Local Avatars.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.7.4, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Simple Local Avatars to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence.
The package http-cache-semantics is vulnerable to Regular Expression Denial of Service (ReDoS) in versions before 4.1.1 via the cache-control HTTP header. WordPress plugins and themes may be using this package, however, they may not be vulnerable to exploitation.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Simple Local Avatars
All 6| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | Missing Authorization to Authenticated (Subscriber+) Avatar Migration ≤2.8.4Update to 2.8.5 | CVE-2025-8482 | |
| Medium4.3 | Missing Authorization to Authenticated (Subscriber+) User Cache Clearing ≤2.7.11Update to 2.8.0 | CVE-2024-10786 | |
| Medium4.3 | Cross-Site Request Forgery via save_default_avatar_file_id() ≤2.7.10Update to 2.7.11 | CVE-2024-43116 | |
| High8.1 | Remote Code Execution ≤1.1.0Update to 1.1.1 | CVE-2022-25860 | |
| Low3.7 | Denial of Service ≤4.2.2Update to 4.3.0 | CVE-2022-25858 |
- Medium4.3Missing Authorization to Authenticated (Subscriber+) Avatar Migration
≤2.8.4Update to 2.8.5
- Medium4.3Missing Authorization to Authenticated (Subscriber+) User Cache Clearing
≤2.7.11Update to 2.8.0
- Medium4.3Cross-Site Request Forgery via save_default_avatar_file_id()
≤2.7.10Update to 2.7.11
- High8.1Remote Code Execution
≤1.1.0Update to 1.1.1
- Low3.7Denial of Service
≤4.2.2Update to 4.3.0
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.