CVE-2022-48279 — In ModSecurity before 2
In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered independent changes to the ModSecurity (C language) codebase.
Published
2023-01-20T00:00:00.000Z
Last modified
2025-04-03T18:43:26.152Z
01What is this vulnerability?
In ModSecurity before 2.9.6 and 3.x before 3.0.8, HTTP multipart requests were incorrectly parsed and could bypass the Web Application Firewall. NOTE: this is related to CVE-2022-39956 but can be considered independent changes to the ModSecurity (C language) codebase.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
08Timeline
- Published: 2023-01-20T00:00:00.000Z
- Last modified: 2025-04-03T18:43:26.152Z
09References
- github.com — https://github.com/SpiderLabs/ModSecurity/releases/tag/v2.9.6
- github.com — https://github.com/SpiderLabs/ModSecurity/pull/2797
- github.com — https://github.com/SpiderLabs/ModSecurity/releases/tag/v3.0.8
- github.com — https://github.com/SpiderLabs/ModSecurity/pull/2795
- coreruleset.org — https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cv…
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/01/msg00023.html
- lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
- lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
- lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
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