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CVE-2026-55954

Authentication Bypass by Spoofing vulnerability in ueberauth ueberauth_apple allows account takeover via unvalidated ID token claims. The Ueberauth.Strategy.Apple.Token.payload/2 function verifies the JWT signature of the callback id_token against Apple's JWKS but does not validate any registered claims. The iss, aud, exp, and iat claims are read from the token and passed on to Ueberauth.Strategy.Apple.handle_callback!/1, which derives the logged-in user's uid and email directly from the unvali
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4df171d27b163fb76ce82b032f7fd9fe67bf548298c50b2b78d702af15b5a474
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ueberauth:ueberauth_apple:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Ueberauth.Strategy.Apple'","'Elixir.Ueberauth.Strategy.Apple.Token'"],"packageName":"ueberauth_apple","packageURL":"pkg:hex/ueberauth_apple","product":"ueberauth_apple","programFiles":["lib/ueberauth/strategy/apple.ex","lib/ueberauth/strategy/apple/token.ex"],"programRoutines":[{"name":"'Elixir.Ueberauth.Strategy.Apple':handle_callback!/1"},{"name":"'Elixir.Ueberauth.Strategy.Apple.Token':payload/2"}],"repo":"https://github.com/ueberauth/ueberau…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/affected/0

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ueberauth:ueberauth_apple:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Ueberauth.Strategy.Apple'","'Elixir.Ueberauth.Strategy.Apple.Token'"],"packageName":"ueberauth/ueberauth_apple","packageURL":"pkg:github/ueberauth/ueberauth_apple","product":"ueberauth_apple","programFiles":["lib/ueberauth/strategy/apple.ex","lib/ueberauth/strategy/apple/token.ex"],"programRoutines":[{"name":"'Elixir.Ueberauth.Strategy.Apple':handle_callback!/1"},{"name":"'Elixir.Ueberauth.Strategy.Apple.Token':payload/2"}],"repo":"https://github…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ueberauth:ueberauth_apple:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Ueberauth.Strategy.Apple'","'Elixir.Ueberauth.Strategy.Apple.Token'"],"packageName":"ueberauth_apple","packageURL":"pkg:hex/ueberauth_apple","product":"ueberauth_apple","programFiles":["lib/ueberauth/strategy/apple.ex","lib/ueberauth/strategy/apple/token.ex"],"programRoutines":[{"name":"'Elixir.Ueberauth.Strategy.Apple':handle_callback!/1"},{"name":"'Elixir.Ueberauth.Strategy.Apple.Token':payload/2"}],"repo":"https://github.com/ueberauth/ueberau…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/affected/0
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:ueberauth:ueberauth_apple:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Ueberauth.Strategy.Apple'","'Elixir.Ueberauth.Strategy.Apple.Token'"],"packageName":"ueberauth/ueberauth_apple","packageURL":"pkg:github/ueberauth/ueberauth_apple","product":"ueberauth_apple","programFiles":["lib/ueberauth/strategy/apple.ex","lib/ueberauth/strategy/apple/token.ex"],"programRoutines":[{"name":"'Elixir.Ueberauth.Strategy.Apple':handle_callback!/1"},{"name":"'Elixir.Ueberauth.Strategy.Apple.Token':payload/2"}],"repo":"https://github…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9.1,"baseSeverity":"CRITICAL","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:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-290","description":"CWE-290 Authentication Bypass by Spoofing","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-55954.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/ueberauth/ueberauth_apple/commit/01e2d9c9b3134e1b78633ad82d136d5ff4a61f28"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://github.com/ueberauth/ueberauth_apple/security/advisories/GHSA-pxx8-68pc-p9mr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/adp/0/references/0
{"tags":["vendor-advisory","related"],"url":"https://github.com/ueberauth/ueberauth_apple/security/advisories/GHSA-pxx8-68pc-p9mr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-55954"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3ad23004c3e58e2c192f0900f2111541be61b624655c062e3157ac7132e318e · sha256:a832ad3b5b54d1ed… · /containers/cna/references/2

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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