Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-27624

Coturn is a free open source implementation of TURN and STUN Server. Coturn is commonly configured to block loopback and internal ranges using "denied-peer-ip" and/or default loopback restrictions. CVE-2020-26262 addressed bypasses involving "0.0.0.0", "[::1]" and "[::]", but IPv4-mapped IPv6 is not covered. When sending a "CreatePermission" or "ChannelBind" request with the "XOR-PEER-ADDRESS" value of "::ffff:127.0.0.1", a successful response is received, even though "127.0.0.0/8" is blocked vi
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b8261aaf1a0501fdfbeabb43ea09621b688b835b597a02514efa3f305a489c03
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-441","description":"CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"coturn","vendor":"coturn","versions":[{"status":"affected","version":"< 4.9.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-441","description":"CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"https://github.com/coturn/coturn/commit/b80eb898ba26552600770162c26a8ae7f3661b0b","tags":["x_refsource_MISC"],"url":"https://github.com/coturn/coturn/commit/b80eb898ba26552600770162c26a8ae7f3661b0b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/references/2
{"name":"https://github.com/coturn/coturn/security/advisories/GHSA-6g6j-r9rf-cm7p","tags":["x_refsource_MISC"],"url":"https://github.com/coturn/coturn/security/advisories/GHSA-6g6j-r9rf-cm7p"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/coturn/coturn/security/advisories/GHSA-6g6j-r9rf-cm7p"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/adp/0/references/0
{"name":"https://github.com/coturn/coturn/security/advisories/GHSA-j8mm-mpf8-gvjg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/coturn/coturn/security/advisories/GHSA-j8mm-mpf8-gvjg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/coturn/coturn/security/advisories/GHSA-j8mm-mpf8-gvjg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aed028c9a2e371d7b247a7f05edc9bb49b499c0a2d4320fdf786e3af6c92c875 · sha256:68c2d6779de990a5… · /containers/adp/0/references/1

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.

← Back to CVE Explorer