CVE-2026-12804

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

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 38.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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

Deferred. NVD last modified this record on 2026-06-22.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2026-06-21 18:30Z4 MO AGO

Last updated

2026-06-22 15:52Z4 MO AGO

Reserved

2026-06-21

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-601URL Redirection to Untrusted Site ('Open Redirect')Base

Data version

5.2

Document digest

6044039024e21134226af70a433b6f04b553e289dbe1fbf86a0cb21d7f46a064

• vuldb.comVDB-372598 | lemonldap-ng SAML Common Domain Cookie Endpoint CDC.pm redirecthttps://vuldb.com/vuln/372598vdb-entrytechnical-description
• vuldb.comVDB-372598 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/372598/ctisignaturepermissions-required
• vuldb.comCVE-2026-12804 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-12804third-party-advisory
• vuldb.comSubmit #836105 | lemonldap lemonldap-ng ca7af863ac5f60d127ba01e8661c0365be374d4b Open Redirecthttps://vuldb.com/submit/836105third-party-advisory
• gitlab.ow2.orghttps://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/work_items/3619related
• gitlab.ow2.orghttps://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/merge_requests/979patch