CVE-2026-104861probe-image-size: Quadratic-time Denial of Service in the SVG Parser
Updated under an hour ago ()
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It affects nodeca probe-image-size. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.43%, higher than 35% of scored CVEs.
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probe-image-size gets image dimensions without downloading the entire file. Prior to 7.4.0, lib/parse_sync/svg.js and lib/parse_stream/svg.js use the searching regular expression /<[-_.:a-zA-Z0-9][^>]*>/, which repeatedly scans to the end of input when attacker-controlled data contains many less-than characters without a closing greater-than character. The synchronous parser converts and scans the full supplied buffer without an input cap, while the streaming parser reparses the complete accumulated SVG prefix for every received chunk. The probe.sync(), probe(stream), and probe(url) entry points can therefore block the Node.js event loop at full CPU, and attacker-controlled chunking can amplify the streaming cost. This issue is fixed in version 7.4.0.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400, CWE-1333
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.43% (percentile 35)
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Oct 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
nodeca probe-image-size nodeca:probe_image_size (from the name) | before 7.4.0 | CNA record |
References
- https://github.com/nodeca/probe-image-size/security/advisories/GHSA-gjj5-9665-rwrcx-refsource-confirm
- https://github.com/nodeca/probe-image-size/commit/60cc96ac0b671e79e328213d0a8e831312b09e84x-refsource-misc
- https://github.com/nodeca/probe-image-size/commit/9b74656d6f973cc59ea2ab1375c0d88390a402adx-refsource-misc
- https://github.com/nodeca/probe-image-size/commit/c032aefabdecf5cb50548ab9ba175db56353078fx-refsource-misc
- https://github.com/nodeca/probe-image-size/releases/tag/7.4.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.