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[GHSA-w3rx-r6r6-pgpr] image-size: ICNS parser allows denial of service through an infinite loop #9473

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[GHSA-w3rx-r6r6-pgpr] image-size: ICNS parser allows denial of service through an infinite loop #9473

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10 changes: 3 additions & 7 deletions advisories/github-reviewed/2026/06/GHSA-w3rx-r6r6-pgpr/GHSA-w3rx-r6r6-pgpr.json
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Original file line number Diff line number Diff line change
Expand Up @@ -7,15 +7,11 @@
"CVE-2025-71330"
],
"summary": "image-size: ICNS parser allows denial of service through an infinite loop",
"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 ICNS image buffer. Attackers can craft an ICNS buffer containing valid magic bytes and a zero-valued entry length field to trigger an infinite loop in the ICNS parser, as the offset is never incremented when the entry length field is 0, causing the while loop condition to remain true indefinitely.",
"details": "image-size versions 0.6.3 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 ICNS image buffer. Attackers can craft an ICNS buffer containing valid magic bytes and a zero-valued entry length field to trigger an infinite loop in the ICNS parser, as the offset is never incremented when the entry length field is 0, causing the while loop condition to remain true indefinitely.\n\nICNS support was introduced in version 0.6.3. Earlier releases do not contain the ICNS parser and are not affected by this ICNS-specific vulnerability.",
"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
"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 12 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.

}
],
"affected": [
Expand All @@ -29,7 +25,7 @@
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
"introduced": "0.6.3"
},
{
"last_affected": "2.0.2"
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