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.
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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| First Time appeared |
Apache
Apache tomcat |
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| Vendors & Products |
Apache
Apache tomcat |
Wed, 23 Sep 2026 14:30:00 +0000
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| Metrics |
cvssV3_1
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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: 2026-09-23T16:00:08Z