Resource Exhaustion Vulnerability in BabelDOC by Funstory
CVE-2026-124553

8.7HIGH

Key Information:

Vendor

Funstory-ai

Status
Babeldoc
Vendor
CVE Published:
8 November 2026

What is CVE-2026-124553?

BabelDOC versions 0.3.61 to 0.6.9 are vulnerable to a resource exhaustion issue that can be exploited by attackers to deplete CPU and memory resources. By crafting a malicious PDF file with an excessively large range specified in the ToUnicode CMap, it can cause billions of iterations within the translation worker's processing loop. This results in a denial of service, halting system functionality. Users are urged to update to version 0.7.0 or later to mitigate this risk.

Affected Version(s)

BabelDOC 0.3.61 < 0.7.0

References

https://github.com/funstory-ai/BabelDOC/security/advisori...
vendor-advisory
https://github.com/funstory-ai/BabelDOC/commit/39a6e9eafe...
patch
https://github.com/funstory-ai/BabelDOC/blob/main/docs/re...
release-notes

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Zachariah Mithani (AploSec)
awwaawwa
.