A Server-Side Request Forgery (SSRF) in the serverRequest function of nocobase v2.1.21 allows authenticated attackers to scan internal reso…

published 2026-09-21 last mo. modified 2026-09-22 last mo. also EUVD-2026-84200

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits: 0; none known

A Server-Side Request Forgery (SSRF) in the serverRequest function of nocobase v2.1.21 allows authenticated attackers to scan internal resources via a crafted HTTP request.

Is CVE-2026-88403 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: last mo. (2026-09-22)

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

github.com https://github.com/czx1111/cve/issues/7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

github.com /czx1111/cve/issues/7
exploit

Sources

CVE List CVE-2026-88403
NVD CVE-2026-88403

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.