CVE-2025-43863
vantage6 lacks brute-force protection on change password functionality
vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct. This vulnerability is fixed in 4.11.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
vantage6 lacks brute-force protection on change password functionality
vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct. This vulnerability is fixed in 4.11.
- Record
CVE-2025-43863- CVSS 4.0
- 1.7 Low
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U - Weakness
- CWE-307
- Updated
- 2026-11-02
EUVDEUVD-2025-18202
vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct. This vulnerability is fixed in 4.11.
- Record
EUVD-2025-18202- CVSS 4.0
- 1.7 Low
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-j6g5-p62x-58hw
vantage6 lacks brute-force protection on change password functionality
Impact
If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct
Patches
This issue has been patched in version 4.11.0
Workarounds
None
- Record
GHSA-j6g5-p62x-58hw- CVSS 4.0
- 1.7 Low
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U - Weakness
- CWE-307
- Updated
- 2026-11-02
NVD
vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct. This vulnerability is fixed in 4.11.
- Record
CVE-2025-43863- CVSS 4.0
- 1.7 Low
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/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
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-307
- Updated
- 2026-11-02
OSV
vantage6 lacks brute-force protection on change password functionality
vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct. This vulnerability is fixed in 4.11.
- Record
CVE-2025-43863- CVSS 4.0
- 1.7 Low
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U - Weakness
- CWE-307
- Updated
- 2026-11-02
OSVGHSA-j6g5-p62x-58hw
vantage6 lacks brute-force protection on change password functionality
Impact
If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct
Patches
This issue has been patched in version 4.11.0
Workarounds
None
- Record
GHSA-j6g5-p62x-58hw- CVSS 4.0
- 1.7 Low
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U - Weakness
- CWE-307
- Updated
- 2026-11-02
OSVPYSEC-2025-220
vantage6 is an open source framework built to enable, manage and deploy privacy enhancing technologies like Federated Learning and Multi-Party Computation. If attacker gets access to an authenticated session, they can try to brute-force the user password by using the change password functionality: they can call that route infinitely which will return the message that password is wrong until it is correct. This vulnerability is fixed in 4.11.
- Record
PYSEC-2025-220- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
vantage6PyPI |
before 4.11.0 | 4.11.0 |
vantage6PyPI |
before 4.11.0, plus listed versions 0.0.00.0.0b00.0.0b10.0.0b31.0.0 Show 45 moreShow less1.0.0a11.0.0a21.0.0b101.0.0b111.0.0b121.0.0b131.0.0b141.0.0b21.0.0b31.0.0b41.0.0b51.0.0b61.0.0b71.0.0b81.0.0b91.1.01.1.0rc11.1.0rc21.2.01.2.11.2.21.2.31.2.3.post22.0.02.0.0.post12.0.0a12.0.0a22.0.0a32.0.1rc12.0.1rc22.1.02.1.0rc12.1.12.2.02.2.0b12.2.0b22.2.0b32.2.0b42.2.12.2.102.2.112.2.122.2.22.2.32.2.4 |
4.11.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-43863 is a low vulnerability (CVSS 1.7) in Vantage6, published June 12, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. Fixed in vantage6 4.11.0.
References
github.com/vantage6/vantage6/security/advisories/GHSA-j6g5-p62x-58hw
nvd.nist.gov/vuln/detail/CVE-2025-43863
Left out here: 208 versions. The JSON record has them.