CVE-2026-12763

mediumpriority · track · 17OT risk · elevatedEPSS 0.002 · 8 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.19% (8th) EPSS

CVSS 4.2 · medium

Is it mine?

4 products

Check your exposure

Who says so?

1 sources

cert_bund

EPSS · scored 2026-10-27

IBM Langflow OSS 1.0.0 through 1.11.5 could allow an authenticated attacker to access another user's MCP server context due to improper cache key isolation in the MCP Tools component.

cvss

Technical severity, 0–10. One row per scoring source.

4.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.9–4.2

v3.14.2mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Nprimary · psirt@us.ibm.com USexploitability 1.6 · impact 2.5

v3.13.9lowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-306US

affected products (4)

Products and version ranges known to be affected.

Open Source Langflow OSS <1.11.0all versionscert_bundDE
Open Source Langflow OSS <1.11.6all versionscert_bundDE
Open Source Langflow≤ OSS <1.11.0cert_bundDE
Open Source Langflow≤ OSS <1.11.6cert_bundDE

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3096Langflow OSS: Mehrere SchwachstellenDeutsch2026-08-30csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Langflow OSS ausnutzen, um Sicherheitsmaßnahmen zu umgehen, beliebigen Code auszuführen, Server-Side Request Forgery (SSRF) durchzuführen, sensible Daten offenzulegen oder zu manipulieren oder Cross-Site-Scripting-Angriffe durchzuführen.
WID-SEC-W-2026-3239Langflow OSS: Mehrere SchwachstellenDeutsch2026-09-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Langflow OSS ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, erweiterte Berechtigungen zu erlangen oder sensible Informationen offenzulegen.

sources

Which sources assert this record, and when.

cert_bund NVD CVE.org MITRE

published 2026-09-14modified 2026-09-16

references (1) nvd

External citations — patches, advisories, analysis.

https://www.ibm.com/support/pages/node/7286662

scry

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