CVE-2026-5246

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.62% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 47.4% of scored records. A rank, not a probability.

NVD base score

2.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-04-02 09:45Z5 MO AGO

Last updated

2026-04-02 13:07Z5 MO AGO

Reserved

2026-03-31

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-285Improper AuthorizationClass
• CWE-639Authorization Bypass Through User-Controlled KeyBase

Data version

5.2

Document digest

02207720359f35e5aca1a7e0624b996b6a8f40836d1b7beb1856d6566019ece1

• vuldb.comVDB-354827 | Cesanta Mongoose P-384 Public Key mongoose.c mg_tls_verify_cert_signature authorizationhttps://vuldb.com/vuln/354827vdb-entrytechnical-description
• vuldb.comVDB-354827 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/354827/ctisignaturepermissions-required
• vuldb.comSubmit #770104 | Cesanta Mongoose 7.20 Authorization Bypasshttps://vuldb.com/submit/770104third-party-advisory
• github.comhttps://github.com/cesanta/mongoose/commit/0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1patch
• github.comhttps://github.com/cesanta/mongoose/releases/tag/7.21patch
• github.comhttps://github.com/cesanta/mongoose/product