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CVE-2026-48990

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. In versions 1.3.4 through 1.6.5, joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.max_payload_length, which can lead to resource exhaustion. The normal JWS compact and flattened JSON paths reject payloads above the configured payload-size limit with ExceededSizeError. The RFC7797 unencoded payload paths do not make the same check. A vali
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1d822b90152ad8f402dba587d540bf60716bfc02e617532164f3b50e0d05b94d
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-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"joserfc","vendor":"authlib","versions":[{"status":"affected","version":"< 1.6.7"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/authlib/joserfc/releases/tag/1.6.7","tags":["x_refsource_MISC"],"url":"https://github.com/authlib/joserfc/releases/tag/1.6.7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/authlib/joserfc/security/advisories/GHSA-wphv-vfrh-23q5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/adp/0/references/0
{"name":"https://github.com/authlib/joserfc/security/advisories/GHSA-wphv-vfrh-23q5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/authlib/joserfc/security/advisories/GHSA-wphv-vfrh-23q5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6b9c1c9fe2a05334dc8aff860d369117acd5a29e83ae4488310923db6847953c · sha256:36f939c8c8c89d77… · /containers/cna/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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