CVE-2026-116827
YesWiki before 4.7.0 SSRF via copyUrlToLocalFile in Bazar CSV Import
YesWiki before 4.7.0 contains a server-side request forgery vulnerability in the Bazar CSV import copyUrlToLocalFile() function that allows authenticated administrators to make arbitrary outbound requests by supplying crafted URLs in CSV file or image fields. Attackers can bypass the extension check with a query-string suffix or redirects to fetch cloud metadata credentials, internal services, or local files via file://, with responses stored in the web-accessible files/ directory.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| yeswiki YesWiki |
≥ 0; < 4.7.0 (affected, semver) 4.7.0 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.2 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 6.8 medium |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N | CNA: VulnCheck |
| 4.0 / 8.2 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 6.8 medium |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-v38g-qc7g-q3mq
exploit · ADP: CISA-ADP
References
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-v38g-qc7g-q3mqCNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-ssrf-via-copyurltolocalfile-in-bazar-csv-importCNA: VulnCheck · third-party-advisory
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-v38g-qc7g-q3mqADP: CISA-ADP · exploit
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-v38g-qc7g-q3mq[email protected]
- https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-ssrf-via-copyurltolocalfile-in-bazar-csv-import[email protected]
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-v38g-qc7g-q3mq134c704f-9b21-4f2e-91b3-4a467353bcc0
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