CVE-2025-34086

high-risk
Published 2025-07-03

Bolt CMS versions 3.7.0 and earlier contain a chain of vulnerabilities that together allow an authenticated user to achieve remote code execution. A user with valid credentials can inject arbitrary PHP code into the displayname field of the user profile, which is rendered unsanitized in backend templates. The attacker can then list and rename cached session files via the /async/browse/cache/.sessions and /async/folder/rename endpoints. By renaming a .session file to a path under the publicly accessible /files/ directory with a .php extension, the attacker can turn the injected code into an executable web shell. Finally, the attacker triggers the payload via a crafted HTTP GET request to the rogue file. NOTE: The vendor announced that Bolt 3 reached end-of-life after 31 December 2021.

Do I need to act?

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50.8% chance of exploitation in next 30 days
EPSS score — higher than 49% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

Bolt

Affected Vendors

Boltcms

References (6)

Release Notes https://boltcms.io/newsitem/major-announcements-bolt-3-eol-bolt-4-2-5-0-releases
Product https://github.com/bolt/bolt
Release Notes https://github.com/bolt/bolt/releases/tag/3.7.1
Exploit https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exp...
Exploit https://www.exploit-db.com/exploits/48296
Exploit https://www.rapid7.com/db/modules/exploit/unix/webapp/bolt_authenticated_rce/
53
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 18/34 · Moderate
Exposure 5/34 · Minimal