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CVE-2026-30940

baserCMS is a website development framework. Prior to version 5.2.3, a path traversal vulnerability exists in the theme file management API (/baser/api/admin/bc-theme-file/theme_files/add.json) that allows arbitrary file write. An authenticated administrator can include ../ sequences in the path parameter to create a PHP file in an arbitrary directory outside the theme directory, which may result in remote code execution (RCE). This issue has been patched in version 5.2.3.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b9bdf7c131173b5294b48c6b0933b0e8e973b28db1d8b3296fe813ad33f7fea5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-73","description":"CWE-73: External Control of File Name or Path","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"basercms","vendor":"baserproject","versions":[{"status":"affected","version":"< 5.2.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-73","description":"CWE-73: External Control of File Name or Path","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://basercms.net/security/JVN_20837860","tags":["x_refsource_MISC"],"url":"https://basercms.net/security/JVN_20837860"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/references/1
{"name":"https://github.com/baserproject/basercms/releases/tag/5.2.3","tags":["x_refsource_MISC"],"url":"https://github.com/baserproject/basercms/releases/tag/5.2.3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/references/2
{"name":"https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/baserproject/basercms/security/advisories/GHSA-c5c6-37vq-pjcq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5c193f8fa33d8ebce1b9c3d23dfd54c18186736343f9407053b43050ad67387a · sha256:2e6fb717f84b1b46… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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