CVE-2026-11956

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

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 9.1% of scored records. A rank, not a probability.

NVD base score

6.3 (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:N/VA:N/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

NVD analysis status

Deferred. 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

2026-06-11 11:30Z2 MO AGO

Last updated

2026-06-11 12:52Z2 MO AGO

Reserved

2026-06-11

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:N/VA:N/SC:N/SI:N/SA:N/E:X

Weaknesses

• CWE-614Sensitive Cookie in HTTPS Session Without 'Secure' AttributeVariant
• CWE-1004Sensitive Cookie Without 'HttpOnly' FlagVariant

Data version

5.2

Document digest

2b7bea77a6b807e3fd8960e38eaf1e2c689b263472581fb684d6f38b73afd80f

• vuldb.comVDB-370343 | TwiN gatus OIDC Session Cookie oidc.go setSessionCookie missing secure attributehttps://vuldb.com/vuln/370343vdb-entrytechnical-description
• vuldb.comVDB-370343 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/370343/ctisignaturepermissions-required
• vuldb.comCVE-2026-11956 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-11956third-party-advisory
• vuldb.comSubmit #836328 | TwiN gatus 5.36.0 Sensitive Cookie Without Secure Attributehttps://vuldb.com/submit/836328third-party-advisory
• github.comhttps://github.com/TwiN/gatus/issues/1689issue-tracking
• github.comhttps://github.com/TwiN/gatus/product