CVE Explorer
CVE-2026-33438
Stirling-PDF is a locally hosted web application that allows you to perform various operations on PDF files. Versions starting in 2.1.5 and prior to 2.5.2 have Denial of Service (DoS) vulnerability in the Stirling-PDF watermark functionality (`/api/v1/security/add-watermark` endpoint). The vulnerability allows authenticated users to cause resource exhaustion and server crashes by providing extreme values for the `fontSize` and `widthSpacer` parameters. Version 2.5.2 patches the issue.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"Stirling-PDF","vendor":"Stirling-Tools","versions":[{"status":"affected","version":">= 2.1.5, < 2.5.2"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:5d6c84e8982682ebe8683a724a8460fe9d9b45dbff60bbc0b5510040cedc5104 · sha256:36993a46aa37e5d1… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:5d6c84e8982682ebe8683a724a8460fe9d9b45dbff60bbc0b5510040cedc5104 · sha256:36993a46aa37e5d1… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:5d6c84e8982682ebe8683a724a8460fe9d9b45dbff60bbc0b5510040cedc5104 · sha256:36993a46aa37e5d1… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["exploit"],"url":"https://github.com/Stirling-Tools/Stirling-PDF/security/advisories/GHSA-3932-2rfq-87xm"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5d6c84e8982682ebe8683a724a8460fe9d9b45dbff60bbc0b5510040cedc5104 · sha256:36993a46aa37e5d1… · /containers/adp/0/references/0
{"name":"https://github.com/Stirling-Tools/Stirling-PDF/security/advisories/GHSA-3932-2rfq-87xm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Stirling-Tools/Stirling-PDF/security/advisories/GHSA-3932-2rfq-87xm"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5d6c84e8982682ebe8683a724a8460fe9d9b45dbff60bbc0b5510040cedc5104 · sha256:36993a46aa37e5d1… · /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.