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CVE-2026-62959

Coturn is a free open source implementation of TURN and STUN Server. From 4.5.2 through 4.14.0, when Coturn is started with --acme-redirect <URL> and exposes a plaintext-TCP listener, an unauthenticated remote client can send a single ordinary HTTP GET request and receive a 301 response whose Location header contains up to ~870 bytes of adjacent process heap memory. The leaked region is a recycled network receive buffer that is reused without being zeroed, so on a busy server it can contain data
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d6818a68438c82602db05baf434e011336acfcd48d941c159dc4472f6ad6e347
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-195","description":"CWE-195: Signed to Unsigned Conversion Error","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"coturn","vendor":"coturn","versions":[{"status":"affected","version":">= 4.5.2, < 4.15.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-195","description":"CWE-195: Signed to Unsigned Conversion Error","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"https://github.com/coturn/coturn/commit/960835886692fa04cf63ddd970c3f330740c87f4","tags":["x_refsource_MISC"],"url":"https://github.com/coturn/coturn/commit/960835886692fa04cf63ddd970c3f330740c87f4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/references/2
{"name":"https://github.com/coturn/coturn/pull/1965","tags":["x_refsource_MISC"],"url":"https://github.com/coturn/coturn/pull/1965"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/references/1
{"name":"https://github.com/coturn/coturn/releases/tag/4.15.0","tags":["x_refsource_MISC"],"url":"https://github.com/coturn/coturn/releases/tag/4.15.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/references/3
{"name":"https://github.com/coturn/coturn/security/advisories/GHSA-m23x-5qf5-988g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/coturn/coturn/security/advisories/GHSA-m23x-5qf5-988g"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/coturn/coturn/security/advisories/GHSA-m23x-5qf5-988g"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4f4745aaf9c442a2436a523a7947a803140862b24baf17afe674776e4c08933 · sha256:e1604d48f5309993… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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