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CVE-2025-6855

chatchat-space Langchain-Chatchat file path traversal

5.1 Medium

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Attack profile

How easy it is to exploit

Attack vector
Adjacent network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.60%Up 0.6 points since Jun 29, 2025
90%50%10%1%

What each source reports

CVE List Score used 5.1

chatchat-space Langchain-Chatchat file path traversal

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Record
CVE-2025-6855
CVSS 4.0
5.1 MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
5.5 MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CVSS 3.0
5.5 MediumCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CVSS 2.0
5.2 AV:A/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2025-19478 5.1

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Record
EUVD-2025-19478
CVSS 4.0
5.1 MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
GitHub AdvisoriesGHSA-f823-phmg-x5fr 2.0

Langchain-Chatchat vulnerable to path traversal

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Record
GHSA-f823-phmg-x5fr
CVSS 4.0
2.0 LowCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
5.5 MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-22
Updated
2026-11-02
NVD 2.0

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Record
CVE-2025-6855
CVSS 4.0
2.0 LowCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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
CVSS 3.1
5.5 MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
5.2 MediumAV:A/AC:L/Au:S/C:P/I:P/A:P
Weakness
CWE-22
Updated
2026-11-02
OSV 2.0

chatchat-space Langchain-Chatchat file path traversal

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Record
CVE-2025-6855
CVSS 4.0
2.0 LowCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Weakness
CWE-22
Updated
2026-11-02
OSVGHSA-f823-phmg-x5fr 2.0

Langchain-Chatchat vulnerable to path traversal

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Record
GHSA-f823-phmg-x5fr
CVSS 4.0
2.0 LowCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
5.5 MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-22
Updated
2026-11-02
OSVPYSEC-2026-1512 2.0

Langchain-Chatchat vulnerable to path traversal

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Record
PYSEC-2026-1512
CVSS 4.0
2.0 LowCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
5.5 MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
langchain-chatchat
PyPI
 through 0.3.1 None known
langchain-chatchat
PyPI
 through 0.3.1, plus listed versions
0.3.00.3.0.202405060.3.0.202406060.3.0.202406100.3.0.20240610.1
Show 13 moreShow less
0.3.0.202406110.3.0.202406120.3.0.20240612.10.3.0.20240612.20.3.0.20240612.30.3.0.20240612.40.3.0.202406160.3.0.202406180.3.0.202406190.3.0.202406210.3.0.20240621.30.3.0.202406250.3.0.20240625.1
 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-6855 is a medium vulnerability (CVSS 5.1) in Chatchat-space Langchain-chatchat, published June 29, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 48th percentile. No source names a fixed version.

References

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