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VulnerabilityPublished

CVE-2025-34060: Monero Project Forum · Deserialization of Untrusted Data

Affects Monero Project ForumSource CVE Database V5

0

Not known to be exploited · CVSS 10.0 Critical.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 4.0 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 56% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Packagistmonero/forumpkg:composer/monero/forumOther threatsAffected
  • =0
Fixed in–

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AI-suggested

Immediate mitigation steps include implementing strict input validation and sanitization on the /get/image/ endpoint to prevent untrusted data from being passed directly to file_get_contents(). Specifically, whitelist allowed URL schemes and domains, and reject any input that does not conform. Enhance MIME type verification by avoiding reliance solely on PHP finfo functions and instead use server-side validation or proxy fetching mechanisms that do not allow stream filter manipulation. Disable or restrict PHP stream filters if not required. Avoid unsafe unserialize() calls on user-controlled data; replace with safer serialization formats such as JSON or implement strict deserialization guards. Monitor web server logs for suspicious requests targeting the /get/image/ endpoint with unusual parameters. Employ web application firewalls (WAFs) with custom rules to detect and block exploitation attempts involving stream filter chains or access to config files. Until an official patch is released, consider isolating the forum server in a segmented network zone with limited access to critical infrastructure. Regularly back up forum data and configuration files securely to enable recovery in case of compromise. Engage with the Monero Project community to track patch releases and apply updates promptly once available.

Description

A PHP objection injection vulnerability exists in the Monero Project’s Laravel-based forum software due to unsafe handling of untrusted input in the /get/image/ endpoint. The application passes a user-supplied link parameter directly to file_get_contents() without validation. MIME type checks using PHP’s finfo can be bypassed via crafted stream filter chains that prepend spoofed headers, allowing access to internal Laravel configuration files. An attacker can extract the APP_KEY from config/app.php, forge encrypted cookies, and trigger unsafe unserialize() calls, leading to reliable remote code execution.

References

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