This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.47 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.67 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 23 Sep 2026 14:45:00 +0000
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Wed, 23 Sep 2026 14:30:00 +0000
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Wed, 23 Sep 2026 11:45:00 +0000
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| Description | Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to fail when Tomcat is located behind a reverse proxy. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.47 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.67 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue. | |
| Title | Apache Tomcat: Transfer-Encoding honored for HTTP/1.0 requests | |
| Weaknesses | CWE-444 | |
| References |
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Projects
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-09-23T13:18:19.230Z
Reserved: 2026-08-21T09:55:42.227Z
Link: CVE-2026-77756
Updated: 2026-09-23T13:18:12.690Z
Status : Received
Published: 2026-09-23T12:17:06.663
Modified: 2026-09-23T14:17:08.553
Link: CVE-2026-77756
No data.
OpenCVE Enrichment
Updated: 2026-09-23T14:30:05Z