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CVE-2026-23876 is a heap-based buffer overflow in ImageMagick’s XBM image decoder, specifically in the ReadXBMImage function. In ImageMagick versions prior to 7.1.2-13 and 6.9.13-38, processing a maliciously crafted XBM image can cause controlled data to be written past the end of an allocated heap buffer. The flaw can be triggered by operations that read or identify an image, which makes it reachable through common image upload, conversion, thumbnailing, and automated media-processing workflows that invoke ImageMagick on untrusted input.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.