What is CVE-2025-29457?

CVE-2025-29457 is a high-severity vulnerability in Mybb, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.6/10. Published 2025-04-17.

How severe is CVE-2025-29457?

High severity. CVSS v3 base score is 7.6 out of 10.

Is CVE-2025-29457 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Mybb

CVE-2025-29457

An issue in MyBB 1.8.38 allows a remote attacker to obtain sensitive information via the Import a Theme function. NOTE: the Supplier disputes this because of the allowed actions of Board administrators and because of SSRF mitigation.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.004 (34.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L.

Affected products

Mybb — versions 1.8.38
N/a — versions n/a

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Product, Mitigation)

Frequently asked questions

What is CVE-2025-29457?: CVE-2025-29457 is a high-severity vulnerability in Mybb, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.6/10. Published 2025-04-17.
How severe is CVE-2025-29457?: High severity. CVSS v3 base score is 7.6 out of 10.
Is CVE-2025-29457 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.