CVE-2026-55955

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Source
https://cve.org/CVERecord?id=CVE-2026-55955
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-55955.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-55955
Aliases
Downstream
DEBIAN (1)
MGASA (1)
OESA (4)
openSUSE (6)
RHSA (10)
SUSE (7)
UBUNTU (1)
Related
openSUSE (6)
SUSE (7)
Published
2026-06-29T20:44:39Z
Modified
2026-09-30T03:48:19Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Apache Tomcat: EncryptInterceptor not protected against replay attacks
Details

Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109.

Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.

Database specific 
{
    "cna_assigner":  "apache",
    "cwe_ids":  [
        "CWE-287"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55955.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "11.0.0-M1"
                },
                {
                    "last_affected":  "11.0.22"
                },
                {
                    "introduced":  "10.1.0-M1"
                },
                {
                    "last_affected":  "10.1.55"
                },
                {
                    "introduced":  "9.0.13"
                },
                {
                    "last_affected":  "9.0.118"
                },
                {
                    "introduced":  "8.5.38"
                },
                {
                    "last_affected":  "8.5.100"
                },
                {
                    "introduced":  "7.0.100"
                },
                {
                    "last_affected":  "7.0.109"
                }
            ],
            "source":  "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/apache/tomcat

Affected ranges

Type
GIT
Repo
https://github.com/apache/tomcat
Events
Introduced
706a395be7c34414d04739de69bde986661976ec
Fixed
0862607e5da91a7c476a6350288d8d8a9380f556
Introduced
4b0b2f6b828d12d150b4de0b64fd6c3849dfcefb
Fixed
eddcf278ad919382608ada1898b2c5b63675c6d5
Introduced
a1ea109bf367ad32361396348845ffd6e524d115
Fixed
2cdef2c0241cdf70b5edd88d3733a52e6b675047
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "9.0.13"
        },
        {
            "fixed":  "9.0.18"
        },
        {
            "introduced":  "8.5.38"
        },
        {
            "fixed":  "8.5.100"
        },
        {
            "introduced":  "7.0.100"
        },
        {
            "fixed":  "7.0.109"
        }
    ],
    "source":  "DESCRIPTION"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-55955.json"