CVE-2026-12811

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

0.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 40.8% 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 2026-06-23.

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

2026-06-21 22:00Z2 MO AGO

Last updated

2026-06-23 13:37Z2 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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.2

Document digest

4a11af3639e8ac333601482255322f189e58ddb31075488f7ba7193c69a21ef3

• vuldb.comVDB-372605 | kortix-ai suna Auth Endpoint page.tsx router.push cross site scriptinghttps://vuldb.com/vuln/372605vdb-entrytechnical-description
• vuldb.comVDB-372605 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/372605/ctisignaturepermissions-required
• vuldb.comCVE-2026-12811 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-12811third-party-advisory
• vuldb.comSubmit #837175 | Kortix AI Suna < 0.8.39 DOM-XSS, Open Redirecthttps://vuldb.com/submit/837175third-party-advisory
• gist.github.comhttps://gist.github.com/TrebledJ/fe7241910ac0aaeff86243fc88e9ffedexploit
• github.comhttps://github.com/kortix-ai/suna/commit/f5dec7aa0c1b8fa0125938f292c0f2430ca75f6cpatch
• github.comhttps://github.com/kortix-ai/suna/releases/tag/v0.8.39patch
• github.comhttps://github.com/kortix-ai/suna/product