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CVE-2026-77819— Langflow OSS is affected by multiple vulnerabilities

Quick assessment

Affected

IBM Langflow OSS

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM Langflow OSS 1.0.0 至 1.12.3 版本中，由于对路径名的限制不当（未将路径限制在指定目录内），可能导致远程认证攻击者覆盖任意文件。

CVSS 6.5 · Medium Updated Oct 29, 2026

Possible ATT&CK Techniques 2 AI

T1566 · Phishing T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Langflow OSS is affected by multiple vulnerabilities

Source: CVE Program / CVE List V5

Vulnerability Description

IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to overwrite arbitrary files due to improper limitation of a pathname to a restricted directory.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

对路径名的限制不恰当(路径遍历)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
IBM	Langflow OSS	1.0.0 ~ 1.12.3	`cpe:2.3:a:ibm:langflow_oss:1.0.0:::::::*`

II. Public POCs for CVE-2026-77819

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-77819

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Other References for CVE-2026-77819 (1)

https://www.ibm.com/support/pages/node/7293015 vendor-advisory patch

https://www.cve.org/CVERecord?id=CVE-2026-77819

Same Patch Batch · IBM · 2026-10-29 · 33 CVEs total

CVE-2026-107329	9.9 CRITICAL	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-107328	9.9 CRITICAL	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-107327	9.9 CRITICAL	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-93680	9.8 CRITICAL	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-110186	9.8 CRITICAL	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-104339	9.8 CRITICAL	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-104328	8.8 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-110309	8.8 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-110244	8.8 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-110196	8.8 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-110193	8.8 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-107326	8.8 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-104324	8.8 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-101288	8.8 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-103092	8.5 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-104317	8.1 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-110245	7.5 HIGH	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-77817	6.5 MEDIUM	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-104316	6.5 MEDIUM	Langflow OSS is affected by multiple vulnerabilities
CVE-2026-90991	6.5 MEDIUM	Langflow OSS is affected by multiple vulnerabilities

Showing top 20 of 33 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Langflow OSS

Same vendor: IBM

Same weakness: CWE-22