CVE-2026-84447: CWE-770: Allocation of Resources Without Limits or Throttling in strukturag libheif
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
AI Analysis
Technical Summary
libheif, a HEIF and AVIF file format decoder and encoder, in versions 1.23.1 and earlier, is vulnerable to resource exhaustion due to crafted grid, iovl, and iden reference graphs. These crafted inputs cause repeated decoding of the same base image because the processed_ids structure is copied per branch and ImageItem::decode_image() lacks a shared operation budget, allowing unbounded resource consumption. This vulnerability is addressed in version 1.23.2.
Potential Impact
An attacker can cause a denial of service by triggering repeated decoding operations that consume excessive resources, potentially leading to application or system instability. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Upgrade libheif to version 1.23.2 or later, where this vulnerability is fixed. No other mitigation is indicated or required.
CVE-2026-84447: CWE-770: Allocation of Resources Without Limits or Throttling in strukturag libheif
Description
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
CVSS v3.1
Score 7.5high
Affected software
strukturag
libheif
pkg:github/strukturag/libheifRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
libheif, a HEIF and AVIF file format decoder and encoder, in versions 1.23.1 and earlier, is vulnerable to resource exhaustion due to crafted grid, iovl, and iden reference graphs. These crafted inputs cause repeated decoding of the same base image because the processed_ids structure is copied per branch and ImageItem::decode_image() lacks a shared operation budget, allowing unbounded resource consumption. This vulnerability is addressed in version 1.23.2.
Potential Impact
An attacker can cause a denial of service by triggering repeated decoding operations that consume excessive resources, potentially leading to application or system instability. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Upgrade libheif to version 1.23.2 or later, where this vulnerability is fixed. No other mitigation is indicated or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-09-01T20:05:09.422Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aad640a55bf5e2cf53a6a54
Added to database: 09/18/2026, 16:17:14 UTC
Last enriched: 09/18/2026, 16:31:30 UTC
Last updated: 09/19/2026, 00:01:40 UTC
Views: 9
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