GHSA-p9qc-8jjx-g8cg · Severity: high · Ecosystem: composer — Bolt CMS vulnerable to authenticated remote code execution
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.
Conclusion & alert: CVE-2025-34086 is rated High Exploit Risk (82.6/100): CVSS High severity, with high exploitation likelihood (EPSS 67.40%, 99th percentile). Core evidence: 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.07% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-11 | 64.33% | 67.40% | +3.07% |
| 2 | 2026-04-29 | 50.83% | 64.33% | +13.50% |
| 3 | 2025-11-30 | — | 50.83% | — |
Full EPSS history (16 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 4.0 | HIGH |
|
— | — | [email protected] |
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
GHSA-p9qc-8jjx-g8cg · Severity: high · Ecosystem: composer — Bolt CMS vulnerable to authenticated remote code execution
| URL | Tags |
|---|---|
| https://boltcms.io/newsitem/major-announcements-bolt-3-eol-bolt-4-2-5-0-releases | Release Notes |
| https://github.com/bolt/bolt | Product |
| https://github.com/bolt/bolt/releases/tag/3.7.1 | Release Notes |
| https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/bolt_authenticated_rce.rb | Exploit |
| https://www.exploit-db.com/exploits/48296 | Exploit VDB Entry |
| https://www.rapid7.com/db/modules/exploit/unix/webapp/bolt_authenticated_rce/ | Exploit Third Party Advisory |