Search/CVE-2026-111816
● CVE — Critical

CVE-2026-111816

DiscoveredOct 21, 2026UpdatedOct 26, 2026

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 v3.1
9.3 CRITICAL
EPSS
0.31%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Oct 23, 2026 → Oct 26, 2026
▲ 0.07pp
0.24% → 0.31% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeCHANGED
ConfidentialityLOW
IntegrityHIGH
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
Connections
1 relationships
Timeline
disclosure → media coverage
Oct 21, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026