CVE-2026-111816

criticalpriority · track · 0EPSS 0.002 · 14 %ile

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.24% (14th) EPSS

CVSS 9.3 · critical

Is it mine?

0 products

Check your exposure

Who says so?

— sources

EPSS · scored 2026-10-22

Apache Traffic Server forwarded a malformed 302 response that should have been rejected as a parse error, because the Transfer-Encoding: chunked carve-out bypassed the rejection path. A response that two peers can read differently is then stored and served, allowing cache poisoning and response-framing desync. 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.

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.8–9.3

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:Nsecondary · security@apache.orgexploitability 3.9 · impact 4.7

v4.09.2criticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N/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:Xsecondary · security@apache.org

v4.07.8highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N/E:U/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:Xsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-444USprimary

affected products

Products and version ranges known to be affected.

No affected products recorded.

sources

Which sources assert this record, and when.

NVD CVE.org MITRE

published 2026-10-21modified 2026-10-22

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+541 more

references (1) nvd

External citations — patches, advisories, analysis.

https://lists.apache.org/thread/r95dq29ywcd1f4x30snxlqmb12z4s4kc

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