CVE-2026-73629
Authenticated SSRF in Serendipity allows internal requests and response exfiltration via uploads.
Is CVE-2026-73629 being exploited?
Not confirmed. CVE-2026-73629 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.19% probability of exploitation in the next 30 days.
How severe is CVE-2026-73629?
CVE-2026-73629 is rated High. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-73629?
Yes. A fix has been recorded for CVE-2026-73629. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73629 affect?
CVE-2026-73629 affects Serendipity CMS < 2.6.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73629?
Upgrade to Serendipity 2.6.0+, restrict adminImagesAdd, audit uploads and monitor internal endpoints.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated adminImagesAdd users can perform SSRF to internal/IPv6/link-local addresses and exfiltrate response bodies via public uploads, enabling data theft and internal scanning.
Patch when possible
- affected< 2.6.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.