CVE-2026-34428
CVE-2026-34428 is a high-severity vulnerability with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.
Key facts
- Severity: High (CVSS 3.x base score 7.7)
- CVSS v4: 8.3
- EPSS exploit prediction: 0% (17th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-23852
- Weakness: CWE-918
- Published:
- Last modified:
Description
Vvveb prior to 1.0.8.1 contains a server-side request forgery vulnerability in the oEmbedProxy action of the editor/editor module where the url parameter is passed directly to getUrl() via curl without scheme or destination validation. Authenticated backend users can supply file:// URLs to read arbitrary files readable by the web server process or http:// URLs targeting internal network addresses to probe internal services, with response bodies returned directly to the caller.
Frequently asked questions
- What is CVE-2026-34428?
- Vvveb prior to 1.0.8.1 contains a server-side request forgery vulnerability in the oEmbedProxy action of the editor/editor module where the url parameter is passed directly to getUrl() via curl without scheme or destination validation. Authenticated backend users can supply file:// URLs to read arbitrary files readable by the web server process or http:// URLs targeting internal network addresses to probe internal services, with response bodies returned directly to the caller.
- How severe is CVE-2026-34428?
- CVE-2026-34428 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-34428 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-34428?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-34428 have an EU (EUVD) identifier?
- Yes. CVE-2026-34428 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23852.
- When was CVE-2026-34428 published?
- CVE-2026-34428 was published on 2026-04-20 and last updated on 2026-06-17.
References
- https://github.com/givanz/Vvveb/commit/2d356844f37819bf771e7cd5e12a8686975e0b2b
- https://github.com/givanz/Vvveb/releases/tag/1.0.8.1
- https://www.vulncheck.com/advisories/vvveb-ssrf-via-oembedproxy
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