CVE catalog

CVE-2026-48990

DEBIAN-CVE-2026-48990

[CVE catalog]

Severity
Unknown · CVSS 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.16% · Oct 25, 2026

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 valid b64=false compact or flattened JSON JWS can therefore deserialize successfully with a payload larger than JWSRegistry.max_payload_length. Applications that accept lower-trust JWS values and rely on joserfc to reject oversized token content during verification have a moderate availability risk. This issue has been fixed in version 1.6.7.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianjoserfc131.1.0-1vulnerable
Debianjoserfc131.2.0-1vulnerable
Debianjoserfc131.2.2-1vulnerable
Debianjoserfc131.3.1-1vulnerable
Debianjoserfc131.3.2-1vulnerable
Debianjoserfc131.3.4-1vulnerable
Debianjoserfc131.4.0-1vulnerable
Debianjoserfc131.4.1-1vulnerable
Debianjoserfc131.4.3-1vulnerable
Debianjoserfc131.5.0-1vulnerable
Debianjoserfc131.6.0-1vulnerable
Debianjoserfc131.6.1-1vulnerable
Debianjoserfc131.6.2-1vulnerable
Debianjoserfc131.6.3-1vulnerable
Debianjoserfc131.6.4-1vulnerable
Debianjoserfc131.6.5-1vulnerable
Debianjoserfc131.6.8-1vulnerable
Debianjoserfc131.7.0-1vulnerable
Debianjoserfc131.7.1-1vulnerable
Debianjoserfc131.7.2-1vulnerable
Debianjoserfc131.7.3-1vulnerable
Debianjoserfc131.7.4-1vulnerable
Debianjoserfc131.7.5-1vulnerable
Debianjoserfc131.7.7-1vulnerable
Debianjoserfc141.1.0-1vulnerable
Debianjoserfc141.2.0-1vulnerable
Debianjoserfc141.2.2-1vulnerable
Debianjoserfc141.3.1-1vulnerable
Debianjoserfc141.3.2-1vulnerable
Debianjoserfc141.3.4-1vulnerable
Debianjoserfc141.4.0-1vulnerable
Debianjoserfc141.4.1-1vulnerable
Debianjoserfc141.4.3-1vulnerable
Debianjoserfc141.5.0-1vulnerable
Debianjoserfc141.6.0-1vulnerable
Debianjoserfc141.6.1-1vulnerable
Debianjoserfc141.6.2-1vulnerable
Debianjoserfc141.6.3-1vulnerable
Debianjoserfc141.6.4-1vulnerable
Debianjoserfc141.6.5-1vulnerable
Debianjoserfc141.6.8-1fixed
Ubuntujoserfc25.101.0.4-1vulnerable
Ubuntujoserfc25.101.1.0-1vulnerable
Ubuntujoserfc25.101.2.0-1vulnerable
Ubuntujoserfc25.101.2.2-1vulnerable
Ubuntujoserfc26.041.2.2-1vulnerable
Ubuntujoserfc26.041.4.0-1vulnerable
Ubuntujoserfc26.041.4.1-1vulnerable
Ubuntujoserfc26.041.4.3-1vulnerable
Ubuntujoserfc26.041.5.0-1vulnerable
Ubuntujoserfc26.041.6.2-1vulnerable
Opensusepython-joserfctumbleweed1.7.1-1.1fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianjoserfcdeb141.6.8-1Not reportedDEBIAN-CVE-2026-48990Not reported
Opensusepython-joserfcrpmtumbleweed1.7.1-1.1Not reportedOPENSUSE-SU-2026:11067-1Not reported

OpenFactory catalog packages

[Debian 13 (Trixie)]

  • [python3-joserfc]Affected

    Source package: [joserfc]

    Details (2)

    • 1.1.0-1 · all · trixie

      Affected

      pypi · joserfc · debian · 13

    • 1.1.0-1 · all · trixie

      Affected

      pypi · joserfc · debian · 13

[openSUSE Tumbleweed]

  • [python313-joserfc]Unknown

    Source package: [python-joserfc]

    Details (1)

    • 1.7.4-2.1 · noarch · tumbleweed

      Unknown · Fixed: 1.7.1-1.1

      Version impact unknown

      pypi · python-joserfc · opensuse · tumbleweed

  • [python314-joserfc]Unknown

    Source package: [python-joserfc]

    Details (1)

    • 1.7.4-2.1 · noarch · tumbleweed

      Unknown · Fixed: 1.7.1-1.1

      Version impact unknown

      pypi · python-joserfc · opensuse · tumbleweed

Observed:

References

[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]