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CVE-2025-65015

Public exploit available. Not confirmed exploited in the wild yet. Fixed in 1.3.5.

CVSS 3.17.5HighEPSS percentile38th0.4% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
Public exploit: 1 sourceFix1.3.5Upgrade to this build

Published Updated Sources: CVE.org, NVD, GitHub, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Authlib JoserfcAffected: >= 1.3.3, < 1.3.5Upgrade to: not statedAffected: >= 1.4.0, < 1.4.2Upgrade to: not statedStated by: CVE record
  • PyPI joserfcAffected: ≥ 1.3.3, < 1.3.5Upgrade to: 1.3.5Stated by: GitHub advisory
  • Hsiaoming JoserfcAffected: ≥ 1.3.3, < 1.3.5Upgrade to: 1.3.5Stated by: NVD
  • Сообщество свободного программного обеспечения Debian GNU/LinuxAffected: 13Upgrade to: not statedStated by: BDU
  • Сообщество свободного программного обеспечения joserfcAffected: от 1.3.3 до 1.3.5Upgrade to: not statedStated by: BDU

Versions as the sources state them. Full version matrix after sign-in

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What it is

From the CVE record

joserfc has Possible Uncontrolled Resource Consumption Vulnerability Triggered by Logging Arbitrarily Large JWT Token Payloads

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS38th
Public exploit
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

0.4% chance of exploitation activity in the next 30 days, which ranks it in the 38th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

The patch came 50 days before any public exploit.

  1. Patch availablerecord updated
  2. Public exploit / PoCsource: github-poc
  3. Patch availablerecord updated
  4. Publishedweakness classified, att&ck mapped

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Scored 7.5 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality NoneNo confidentiality impact
  • Integrity NoneNo integrity impact
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 12 more references. See all after sign-in

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