CVE-2026-114622: baserproject basercms · Path Traversal
Affects baserproject basercmsSource CVE Database V5
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.2 High : upgrade to 5.4.2 or 5.3.2 soon.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.4.2, 5.3.2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
Upgrade basercms and baserproject/basercms to 5.4.2 or 5.3.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| baserprojectbasercms | Affected
| Fixed in
|
| baserprojectbasercms | Affected
| Fixed in
|
GitHubbaserproject/basercmspkg:github/baserproject/basercmsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
This vulnerability has been officially fixed in baserCMS versions 5.3.2 and 5.4.2. Users should upgrade to these versions or later to remediate the issue. No additional mitigation is required if these versions are deployed. Exploitation requires the optional BcThemeFile plugin and an administrator session, so disabling the plugin or restricting administrator access may reduce risk temporarily but is not a substitute for patching.
Description
baserCMS versions 5.2.3 before 5.3.2 and 5.4.0 before 5.4.2 contain a path traversal vulnerability in the optional BcThemeFile plugin's Admin API. The vulnerability arises because encoded path traversal sequences are decoded after validation, allowing an authenticated administrator to write PHP files outside the intended theme directory, such as into the webroot, and execute them. Exploitation requires an administrator session, the non-default plugin enabled, and a same-origin Origin header. The issue has been patched in versions 5.3.2 and 5.4.2.
References
- github.com/baserproject/basercms/security/advisories/GHSA-q7g3-qwrc-mp89 (opens in a new tab)
- github.com/baserproject/basercms/commit/53ecf177dfb10eb1fb89c4b42d313983329aa162 (opens in a new tab)
- github.com/baserproject/basercms/releases/tag/5.3.2 (opens in a new tab)
- github.com/baserproject/basercms/releases/tag/5.4.2 (opens in a new tab)