CVE Explorer
CVE-2026-33704
Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user (including students) can write arbitrary content to files on the server via the BigUpload endpoint. The key parameter controls the filename and the raw POST body becomes the file content. While .php extensions are filtered to .phps, the .pht extension passes through unmodified. On Apache configurations where .pht is handled as PHP, this leads to Remote Code Execution. This vulnerability is fixed in 1.11.38.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"chamilo-lms","vendor":"chamilo","versions":[{"status":"affected","version":"< 1.11.38"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:2d604a4880e11104b1748159728c6d8f7edfaa1482024c96df97d21804fa3ec5 · sha256:b2782e6778465f04… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:2d604a4880e11104b1748159728c6d8f7edfaa1482024c96df97d21804fa3ec5 · sha256:b2782e6778465f04… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-434","description":"CWE-434: Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:2d604a4880e11104b1748159728c6d8f7edfaa1482024c96df97d21804fa3ec5 · sha256:b2782e6778465f04… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"https://github.com/chamilo/chamilo-lms/commit/9748f1ffbdb8b6dc84c0e0591c9d3c1d92e21c00","tags":["x_refsource_MISC"],"url":"https://github.com/chamilo/chamilo-lms/commit/9748f1ffbdb8b6dc84c0e0591c9d3c1d92e21c00"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2d604a4880e11104b1748159728c6d8f7edfaa1482024c96df97d21804fa3ec5 · sha256:b2782e6778465f04… · /containers/cna/references/1
{"name":"https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-phfx-pwwg-945v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-phfx-pwwg-945v"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:2d604a4880e11104b1748159728c6d8f7edfaa1482024c96df97d21804fa3ec5 · sha256:b2782e6778465f04… · /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.