CVE-2025-3177

FastCMS JWT hard-coded key

A vulnerability was found in FastCMS 0.1.5. It has been declared as critical. This vulnerability affects unknown code of the component JWT Handler. The manipulation leads to use of hard-coded cryptographic key . The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

Affected

FastCMS

CVSS v4.0 VULDB

2.3 LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/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

CVSS v3.1 NVD

8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 VULDB

5.0 MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0 VULDB

4.6 MEDIUMAV:N/AC:H/Au:S/C:P/I:P/A:P

EPSS

0.48% chance of exploitation in the next 30 days, 40th percentile

Published

2025-04-03

Proof-of-concept exploits (1)

• chujianxin0101/vuln/issues/2

Security advisories

• https://vuldb.com/?ctiid.303136
• https://vuldb.com/?id.303136
• https://vuldb.com/?submit.543673

References

• CVE Record
• NVD entry

Related

• CVE-2025-10105
• CVE-2025-10106
• CVE-2025-10110
• CVE-2025-3816
• CVE-2025-4819
• CVE-2026-2666