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[GHSA-5p2g-fcmc-qvqq] image-size: JXL and HEIF parsers allow denial of service through infinite loops #9472

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[GHSA-5p2g-fcmc-qvqq] image-size: JXL and HEIF parsers allow denial of service through infinite loops #9472

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10 changes: 3 additions & 7 deletions advisories/github-reviewed/2026/06/GHSA-5p2g-fcmc-qvqq/GHSA-5p2g-fcmc-qvqq.json
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Original file line number Diff line number Diff line change
@@ -1,18 +1,14 @@
{
"schema_version": "1.4.0",
"id": "GHSA-5p2g-fcmc-qvqq",
"modified": "2026-08-07T20:54:40Z",
"modified": "2026-08-07T20:54:42Z",
"published": "2026-06-10T15:31:30Z",
"aliases": [
"CVE-2025-71329"
],
"summary": "image-size: JXL and HEIF parsers allow denial of service through infinite loops",
"details": "image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted image buffer with a zero-valued size field in a recognized box-type. Attackers can trigger an infinite loop in the JXL or HEIF image parsers by providing a crafted image containing a box with a size of zero, causing the offset to never advance and permanently hanging the application.",
"details": "image-size versions 1.2.0 through 2.0.2 contain a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted image buffer with a zero-valued size field in a recognized box-type. Attackers can trigger an infinite loop in the JXL or HEIF image parsers by providing a crafted image containing a box with a size of zero, causing the offset to never advance and permanently hanging the application.\n\nThe JXL partial-stream loop is present from version 1.2.0. The HEIF multi-image loop described by the linked reproducer is present in version 2.0.0 and later. Versions before 1.2.0 do not contain these caller-side loops. The earlier infinite loop within findBox itself is tracked separately as CVE-2025-71319 (GHSA-m5qc-5hw7-8vg7).",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
Comment on lines 11 to 14

@wojtekmaj wojtekmaj Sep 13, 2026 •
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Agreed. GitHub’s improvement form removed CVSS v3, and I can’t amend its generated branch. Please preserve the original severity data when reviewing.

Expand All @@ -29,7 +25,7 @@
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
"introduced": "1.2.0"
},
{
"last_affected": "2.0.2"
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