Vulnerability details
CVE-2026-8476
IBM Langflow OSS
Disk Cache Deserialization Remote Code Execution Vulnerability
CVSS 3.1
9.9Critical
Official description
IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the disk-based caching mechanism. The AsyncDiskCache class uses Python's unsafe pickle.loads() function to deserialize cached objects from disk without validation, integrity verification, or authentication, enabling arbitrary code execution when malicious pickle payloads are processed. Attackers who can influence cached data through file system access, malicious workflow inputs, custom components, or API manipulation can achieve complete system compromise with the privileges of the Langflow server process.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.9Critical | 3.1 | CVEProject cvelistV5 (CNA) (ibm) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| IBM | Langflow OSS | 1.0.0 ≤ v ≤ 1.10.0 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://www.ibm.com/support/pages/node/7278922 vendor-advisorypatch
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Details
- Published
- 2026-07-17
- Last updated
- 2026-07-23
- State
- Published
- Assigner (CNA)
- ibm
Exploit prediction (EPSS)
0.97%
Probability of exploitation in 30 days
62.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-502Deserialization of Untrusted Data