RCE in Bolt Cms
CVE-2025-34086
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.036 (89.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.036 · change: +0.004
Affected products
- Bolt Cms — versions 0
- Boltcms Bolt
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/bolt/bolt/releases/tag/3.7.1 (vendor-advisory, Release Notes, patch)
- www.exploit-db.com/exploits/48296 (Exploit, VDB Entry, exploit)
- www.rapid7.com/db/modules/exploit/unix/webapp/bolt_authenticated_rce/ (Exploit, Third Party Advisory, third-party-advisory)
- github.com/bolt/bolt (Product, product)
- boltcms.io/newsitem/major-announcements-bolt-3-eol-bolt-4-2-5-0-releases (vendor-advisory, Release Notes)
- raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/u… (Exploit, exploit)
Frequently asked questions
- What is CVE-2025-34086?
- CVE-2025-34086 is a high-severity vulnerability in Bolt Cms, classified under Code Injection. CVSS score: 8.8/10. Published 2025-07-03.
- How severe is CVE-2025-34086?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-34086 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.