
Critical Rails Bug Threatens to Derail Vulnerable Servers
Rails Active Storage ImageMagick integration allows arbitrary file read and write.
20 stories, newest first · one card per story

Rails Active Storage ImageMagick integration allows arbitrary file read and write.

Unauthenticated image uploads via Active Storage can read and write server files in default ImageMagick setups; fixed in Rails 8.0.5.2 and 8.1.4.1 with a security policy.

Ruby on Rails Active Storage before 8.1.4.1 and 8.0.5.2 allows arbitrary file write and read of secrets via crafted uploads processed by ImageMagick.

Fixed in ImageMagick 7.1.2-33 and 6.9.13-58; reject XMP profiles in policy.xml as a stopgap.

Ghostscript heap overflow CVE-2026-39919 can enable remote code execution through crafted PDF uploads, with no exploitation seen yet.

Wordfence disclosed Ghostscript CVE-2026-39919, a CVSS 9.8 flaw fixed in 10.08.0, with lab PDF remote code execution.

Researchers disclosed CVE-2026-55420, letting low-privilege Discourse users read server files via ImageMagick uploads.

Searchlight Cyber showed a patched Discourse upload chain letting basic users read server files via ImageMagick.

Fortbridge showed authenticated WordPress HEIC uploads can exploit libheif and execute code in PHP-FPM.

A critical libheif heap overflow, fixed in 1.23.3, enabled authenticated WordPress RCE via crafted HEIC uploads.
Ubuntu patches ImageMagick flaws that could let attackers cause denial of service or leak information.
Ubuntu patched ImageMagick flaws that could cause denial of service or code execution.

Hacktron researchers used Claude Opus 5 to build a libheif exploit in hours, hijacking OpenAI staff accounts via a Discourse forum shared-SSO flaw.
Researchers chained a libheif heap overflow with an SSO misconfiguration to take over OpenAI employee ChatGPT accounts, earning a $6,500 bounty.

Researchers chained a libheif RCE in Discourse with an over-privileged OpenAI forum sign-in token flaw to take over ChatGPT and Codex accounts.

Researchers used Claude Opus 5 to build a libheif exploit that compromised OpenAI's forum, hijacked employee ChatGPT/Codex accounts, and reached the internal monorepo.

Hacktron researchers chained a libheif heap overflow in Discourse with an OpenAI SSO flaw to take over employee ChatGPT/Codex accounts and access internal repositories.
Ubuntu releases USN-8739-2, extending ImageMagick fixes for four CVEs including possible arbitrary code execution to Ubuntu 24.04 LTS.
Canonical released USN-8739-1 fixing five ImageMagick flaws that could cause denial of service or arbitrary code execution.
WordPress 7.0.4 patches an author-level RCE in how uploaded media is handed to ImageMagick.
Today 1.5K readers · 2.4K views · 754 reads · all time 189K views