SB2026082728 - Allocation of Resources Without Limits or Throttling in jwcrypto

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Main Vulnerability Database SB2026082728

SB2026082728 - Allocation of Resources Without Limits or Throttling in jwcrypto

Published: August 27, 2026

Security Bulletin ID SB2026082728
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-80179)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled memory allocation in JWE.deserialize() compact JWE parsing fallback when parsing attacker-controlled malformed non-JSON token text with many period delimiters. A remote attacker can send a specially crafted JWE string to cause a denial of service.

Exploitation requires the application to pass untrusted JWE input to the deserializer before authentication succeeds.


Remediation

Install update from vendor's website.

References