CVE-2026-77762
CVE-2026-77762: 3 tracked advisory records across Apache, NetApp, Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Apache
1 advisory- Advisory severityHigh8.1
High [CVE-2026-77762] Apache Tomcat: Stale HPACK emitter injects trailers into recycled pooled Request
CVE-2026-77762Source published Source updated
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat allows an attacker to inject trailer fields into another HTTP/2 request. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.39 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fix the issue.
- Affected products in this advisory
- Apache Tomcat
- Source-reported affected versions
- Apache Tomcat 11.0.0-M1 through 11.0.25
- Apache Tomcat 10.1.0-M1 through 10.1.59
- Apache Tomcat 9.0.39 through 9.0.121
- Apache Tomcat 8.5.59 through 8.5.100
- Source-reported fixed versions
- 11.0.26
- 10.1.60
- 9.0.122
- Mitigation guidance
- Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fix the issue.
NetApp
1 advisory- Advisory severityHigh8.1
High [CVE-2026-77762] Apache Tomcat Vulnerability in NetApp Products
NTAP-20261002-0004Source published Source updated
Apache Tomcat versions 9.0.39 through 9.0.121, 10.1.0-M1 through 10.1.59, and 11.0.0-M1 through 11.0.25 are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information, addition or modification of data or Denial of Service (DoS). NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- 9.0.39
- 9.0.121
- 10.1.0
- 10.1.59
2 more entries in the full advisory.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
Red Hat
1 advisory- Advisory severityMedium6.5
Medium [CVE-2026-77762] Race condition allows HTTP/2 request manipulation
CVE-2026-77762Source published Source updated
Race condition allows HTTP/2 request manipulation. Red Hat rates this low (CVSS 6.5). Weakness: CWE-821. Red Hat lists fixing advisory RHSA-2026:68257 with package tomcat11-main-11.0.26-0.1.hum1, tomcat10-main-10.1.60-0.1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 8 more.
- Related products — impact not confirmed
- Red Hat Hardened Images
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
8 more entries in the full advisory.
- Source-reported affected versions
- 11.0.0
- 11.0.25
- 10.1.0
- 10.1.59
4 more entries in the full advisory.
- Source-reported fixed versions
- tomcat11-main-11.0.26-0.1.hum1
- tomcat10-main-10.1.60-0.1.hum1
- RHSA-2026:68257
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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