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CVE-2026-53431

Authentication Bypass by Capture-replay vulnerability in malach-it Boruta allows an attacker who has obtained a previously valid JWT client assertion to authenticate as the issuing OAuth client after the assertion has expired. Boruta accepts JWT-based client authentication (client_secret_jwt and private_key_jwt token endpoint authentication methods) but never enforces that the assertion's exp claim is in the future. The pre-check helper Boruta.Oauth.Request.Base.check_expiration/1 in lib/boruta
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b767017f78f589c633bc4f7f9894bc7a9d092c426c0a902605c8c5621be96f3d
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://github.com","cpes":["cpe:2.3:a:malach-it:boruta_auth:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Boruta.Oauth.Request.Base'","'Elixir.Boruta.Oauth.Authorization.Client.Token'"],"packageName":"malach-it/boruta_auth","packageURL":"pkg:github/malach-it/boruta_auth","product":"boruta","programFiles":["lib/boruta/oauth/request/base.ex","lib/boruta/oauth/authorization/client.ex"],"programRoutines":[{"name":"'Elixir.Boruta.Oauth.Request.Base':fetch_client_authentication/1"},{"name":"'Elixir.Boruta.Oauth.Request.Base':check_expiration/1"},{"name":"'Elix…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/affected/1

{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:malach-it:boruta_auth:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Boruta.Oauth.Request.Base'","'Elixir.Boruta.Oauth.Authorization.Client.Token'"],"packageName":"boruta","packageURL":"pkg:hex/boruta","product":"boruta","programFiles":["lib/boruta/oauth/request/base.ex","lib/boruta/oauth/authorization/client.ex"],"programRoutines":[{"name":"'Elixir.Boruta.Oauth.Request.Base':fetch_client_authentication/1"},{"name":"'Elixir.Boruta.Oauth.Request.Base':check_expiration/1"},{"name":"'Elixir.Boruta.Oauth.Authorization.Cl…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:malach-it:boruta_auth:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Boruta.Oauth.Request.Base'","'Elixir.Boruta.Oauth.Authorization.Client.Token'"],"packageName":"malach-it/boruta_auth","packageURL":"pkg:github/malach-it/boruta_auth","product":"boruta","programFiles":["lib/boruta/oauth/request/base.ex","lib/boruta/oauth/authorization/client.ex"],"programRoutines":[{"name":"'Elixir.Boruta.Oauth.Request.Base':fetch_client_authentication/1"},{"name":"'Elixir.Boruta.Oauth.Request.Base':check_expiration/1"},{"name":"'Elix…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/affected/1
{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:malach-it:boruta_auth:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Boruta.Oauth.Request.Base'","'Elixir.Boruta.Oauth.Authorization.Client.Token'"],"packageName":"boruta","packageURL":"pkg:hex/boruta","product":"boruta","programFiles":["lib/boruta/oauth/request/base.ex","lib/boruta/oauth/authorization/client.ex"],"programRoutines":[{"name":"'Elixir.Boruta.Oauth.Request.Base':fetch_client_authentication/1"},{"name":"'Elixir.Boruta.Oauth.Request.Base':check_expiration/1"},{"name":"'Elixir.Boruta.Oauth.Authorization.Cl…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/affected/0

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:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-294","description":"CWE-294 Authentication Bypass by Capture-replay","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-53431.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/malach-it/boruta_auth/commit/5204f88f9b2cdd9637a755337ed5f99185be5474"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/references/3
{"tags":["patch"],"url":"https://github.com/malach-it/boruta_auth/commit/69363432aa36760fc5438e4e17115d0f7c1b925a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/references/4
{"tags":["vendor-advisory","related"],"url":"https://github.com/malach-it/boruta_auth/security/advisories/GHSA-xjv8-vmh5-xhf6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/malach-it/boruta_auth/security/advisories/GHSA-xjv8-vmh5-xhf6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /containers/adp/0/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-53431"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:42b15a87c7e41daa24d1674294df6748271a62f0e0e6984ccb0978d42ef61304 · sha256:552609de28359744… · /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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