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TI-2020-19374 Aliases CVE-2020-37239GHSA-4fvf-cvgm-9hvc

libbabl 0.1.62 Broken Double Free Detection Memory Safety

Priority HIGH 81CWE-415Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.

Summary

libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety checks by exploiting signature overwriting in freed chunks. Attackers can call babl_free() twice on the same pointer without triggering detection, as libc's malloc metadata overwrites babl's signature field upon freeing, enabling potential memory corruption and code execution.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00459 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Gegllibbabl0.1.62—No fix listedCNA
  • libbabl VendorGegl Affected 0.1.62 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-37239
  2. 2026-10-03 Alias added: GHSA-4fvf-cvgm-9hvc

References

Exploit 1

Other 2

  • TI-2012-03775 Multiple integer overflows in operations/external/ppm-load.c in GEGL (Generic Graphics… CVSS 2.0HIGH 7.5
  • TI-2018-07176 An issue was discovered in GEGL through 0.3.32. CVSS 3.0HIGH 8.8
  • TI-2018-07174 An issue was discovered in GEGL through 0.3.32. CVSS 3.0HIGH 8.8
  • TI-2021-20550 load_cache in GEGL before 0.4.34 allows shell expansion when a pathname in a constructed… CVSS 3.1HIGH 7.8
  • TI-2018-07175 An issue was discovered in GEGL through 0.3.32. CVSS 3.0HIGH 7.5
  • TI-2018-07173 An issue was discovered in GEGL through 0.3.32. CVSS 3.0HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences