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Fencer Vulns
high 8.8

CVE-2025-34086 json

Bolt CMS Authenticated Remote Code Execution via Profile Injection and File Rename

published 2025-07-03 16 mo ago modified 2026-11-08 20 h ago also EUVD-2025-19905 , GHSA-p9qc-8jjx-g8cg

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
1
Metasploit

Summary

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.

Patch / fix

Timeline

  1. First public exploit (Metasploit exploit/unix/webapp/bolt_authenticated_rce)
  2. Published

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
16 mo ago

Exploit prediction

4.32% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/unix/webapp/bolt_authenticated_rce Bolt CMS 3.7.0 - Authenticated Remote Code Execution metasploit exploit, great rank, 2020-05-07
  • exploit-db.com https://www.exploit-db.com/exploits/48296 referenced PoC, tagged "exploit" by a source, unverified
  • raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/bolt_authenticated_rce.rb referenced PoC, tagged "exploit" by a source, unverified
  • rapid7.com https://www.rapid7.com/db/modules/exploit/unix/webapp/bolt_authenticated_rce/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 7.5 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 7.5 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist bolt/bolt
<=3.7.0
 no fix listed

Affected products

  • Bolt CMS

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code
  • CWE-434 Unrestricted Upload of File with Dangerous Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.