CVE catalog
CVE-2025-31699
trafficserver: CVE-2025-31699
- Severity
- Critical · CVSS 9.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.35% · Oct 25, 2026
Apache Traffic Server can return an origin connection to the shared pool while the origin is still waiting on a request body the client declared but never fully sent, including when the client used Expect: 100-continue. The origin then reads a later request on that connection as leftover body data, which lets an attacker smuggle requests past ATS access controls, disrupt other users' requests, or poison the cache. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | trafficserver | bookworm | 9.2.5+ds-0+deb12u4 | vulnerable |
| Debian | trafficserver | bookworm-security | 9.2.5+ds-0+deb12u4 | vulnerable |
| Ubuntu | trafficserver | 16.04 | 5.3.0-2ubuntu1 | vulnerable |
| Ubuntu | trafficserver | 16.04 | 5.3.0-2ubuntu2 | vulnerable |
| Ubuntu | trafficserver | 18.04 | 7.0.0-5 | vulnerable |
| Ubuntu | trafficserver | 18.04 | 7.1.2+ds-2 | vulnerable |
| Ubuntu | trafficserver | 18.04 | 7.1.2+ds-2build1 | vulnerable |
| Ubuntu | trafficserver | 18.04 | 7.1.2+ds-3 | vulnerable |
| Ubuntu | trafficserver | pro | 8.1.1+ds-1.1 | vulnerable |
| Ubuntu | trafficserver | pro | 9.1.1+ds-2build1 | vulnerable |
| Ubuntu | trafficserver | pro | 9.1.1+ds-2ubuntu0.1~esm1 | vulnerable |
| Ubuntu | trafficserver | pro | 9.1.1+ds-2ubuntu0.1 | vulnerable |
| Ubuntu | trafficserver | pro | 9.1.1+ds-2ubuntu0.1+esm1 | vulnerable |
| Ubuntu | trafficserver | 24.04 | 9.2.1+ds-1build1 | vulnerable |
| Ubuntu | trafficserver | 24.04 | 9.2.2+ds-1 | vulnerable |
| Ubuntu | trafficserver | 24.04 | 9.2.3+ds-1 | vulnerable |
| Ubuntu | trafficserver | 24.04 | 9.2.3+ds-1+deb12u1 | vulnerable |
| Ubuntu | trafficserver | 24.04 | 9.2.3+ds-1+deb12u1build1 | vulnerable |
| Ubuntu | trafficserver | 24.04 | 9.2.3+ds-1+deb12u1build3 | vulnerable |
| Ubuntu | trafficserver | 24.04 | 9.2.3+ds-1+deb12u1build4 | vulnerable |
| Ubuntu | trafficserver | 24.04 | 9.2.3+ds-1+deb12u1ubuntu0.1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | trafficserver | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [trafficserver]Affected
Details (4)
9.2.5+ds-0+deb12u4· amd64 · bookwormAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookwormAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· amd64 · bookworm-securityAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookworm-securityAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
- [trafficserver-dev]Affected
Source package: [trafficserver]
Details (4)
9.2.5+ds-0+deb12u4· amd64 · bookwormAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookwormAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· amd64 · bookworm-securityAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookworm-securityAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
- [trafficserver-experimental-plugins]Affected
Source package: [trafficserver]
Details (4)
9.2.5+ds-0+deb12u4· amd64 · bookwormAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookwormAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· amd64 · bookworm-securityAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
9.2.5+ds-0+deb12u4· arm64 · bookworm-securityAffected
dsa · trafficserver · debian · bookworm; dsa · trafficserver · debian · 12
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2025-31699]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-31699]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-31699]
- [https://security-tracker.debian.org/tracker/CVE-2025-31699]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]