CVE-2026-68554

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Source
https://cve.org/CVERecord?id=CVE-2026-68554
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68554.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-68554
Aliases
  • GHSA-5538-7cxj-5jcc
Downstream
Related
Published
2026-08-19T20:38:28Z
Modified
2026-10-28T10:55:14Z
Severity
  • 2.3 (Low) CVSS_V4 - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Coturn: STUN attributes after MESSAGE-INTEGRITY are processed, letting on-path attackers modify authenticated TURN requests
Details

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, an on-path attacker can append attributes after MESSAGE-INTEGRITY to an authenticated STUN request on plain UDP or TCP, adjust the STUN header length, and recompute the unkeyed FINGERPRINT while the original HMAC remains valid because it covers only the message prefix. Server-side parsing in src/server/ns_turn_server.c continues past MESSAGE-INTEGRITY through handle_turn_allocate(), handle_turn_create_permission(), handle_turn_refresh(), and handle_turn_command(), allowing trailing LIFETIME, XOR-PEER-ADDRESS, or ORIGIN attributes to override allocation lifetime, inject a permission, or bypass the origin check. TLS and DTLS deployments prevent this in-transit modification. This issue is fixed in version 4.15.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-345",
        "CWE-924"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68554.json"
}
References

Affected packages

Git / github.com/coturn/coturn

Affected ranges

Type
GIT
Repo
https://github.com/coturn/coturn
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ac6a9633b16a1a35ab248570484e52d138515ad5
Fixed
ab762f334f511ea37ab4b703a47d5d683a5be978
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "4.15.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "ab762f334f511ea37ab4b703a47d5d683a5be978"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "4.15.0",
            "range": [
                {
                    "fixed": "ac6a9633b16a1a35ab248570484e52d138515ad5"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

4.*
4.10.0
4.11.0
4.12.0
4.13.0
4.13.1
4.14.0
4.4.5.3
4.4.5.4
4.5.0.1
4.5.0.2
4.5.0.3
4.5.0.4
4.5.0.5
4.5.0.6
4.5.0.7
4.5.1.0
4.5.1.1
4.5.1.2
4.5.1.3
4.5.2
4.6.0
4.6.2
4.6.3
4.7.0
4.8.0
4.9.0
docker/4.*
docker/4.10.0-r0
docker/4.10.0-r1
docker/4.11.0-r0
docker/4.12.0-r0
docker/4.13.0-r0
docker/4.13.1-r0
docker/4.14.0-r0
docker/4.5.2-r0
docker/4.5.2-r10
docker/4.5.2-r11
docker/4.5.2-r12
docker/4.5.2-r13
docker/4.5.2-r14
docker/4.5.2-r6
docker/4.5.2-r7
docker/4.5.2-r8
docker/4.5.2-r9
docker/4.6.0-r0
docker/4.6.0-r1
docker/4.6.1-r0
docker/4.6.1-r1
docker/4.6.1-r2
docker/4.6.1-r3
docker/4.6.2-r0
docker/4.6.2-r1
docker/4.6.2-r10
docker/4.6.2-r11
docker/4.6.2-r12
docker/4.6.2-r13
docker/4.6.2-r2
docker/4.6.2-r3
docker/4.6.2-r4
docker/4.6.2-r5
docker/4.6.2-r6
docker/4.6.2-r7
docker/4.6.2-r8
docker/4.6.2-r9
docker/4.6.3-r0
docker/4.6.3-r1
docker/4.6.3-r2
docker/4.6.3-r3
docker/4.7.0-r0
docker/4.7.0-r1
docker/4.7.0-r2
docker/4.7.0-r3
docker/4.7.0-r4
docker/4.8.0-r0
docker/4.8.0-r1
docker/4.9.0-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68554.json"
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vanir_signatures_modified 
"2026-10-28T10:55:14Z"