CVE-2025-66029
Open OnDemand affected by Apache proxy passing sensitive headers
Open OnDemand provides remote web access to supercomputers. In versions 4.0.8 and prior, the Apache proxy allows sensitive headers to be passed to origin servers. This means malicious users can create an origin server on a compute node that record these headers when unsuspecting users connect to it. Maintainers anticipate a patch in a 4.1 release. Workarounds exist for 4.0.x versions. Using custom_location_directives in ood_portal.yml in version 4.0.x (not available for versions below 4.0) centers can unset and or edit these headers. Note that OIDCPassClaimsAs both is the default and centers can set OIDCPassClaimsAs to none or environment to stop passing these headers to the client. Centers that have an OIDC provider with the OIDCPassClaimsAs with none or environment settings can adjust the settings using guidance provided in GHSA-2cwp-8g29-9q32 to unset the mod_auth_openidc_session cookies.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
7.6
Open OnDemand affected by Apache proxy passing sensitive headers
Open OnDemand provides remote web access to supercomputers. In versions 4.0.8 and prior, the Apache proxy allows sensitive headers to be passed to origin servers. This means malicious users can create an origin server on a compute node that record these headers when unsuspecting users connect to it. Maintainers anticipate a patch in a 4.1 release. Workarounds exist for 4.0.x versions. Using custom_location_directives in ood_portal.yml in version 4.0.x (not available for versions below 4.0) centers can unset and or edit these headers. Note that OIDCPassClaimsAs both is the default and centers can set OIDCPassClaimsAs to none or environment to stop passing these headers to the client. Centers that have an OIDC provider with the OIDCPassClaimsAs with none or environment settings can adjust the settings using guidance provided in GHSA-2cwp-8g29-9q32 to unset the mod_auth_openidc_session cookies.
- Record
CVE-2025-66029- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N - Weakness
- CWE-522, CWE-523
- Updated
- 2026-11-02
EUVDEUVD-2025-204011
7.6
Open OnDemand provides remote web access to supercomputers. In versions 4.0.8 and prior, the Apache proxy allows sensitive headers to be passed to origin servers. This means malicious users can create an origin server on a compute node that record these headers when unsuspecting users connect to it. Maintainers anticipate a patch in a 4.1 release. Workarounds exist for 4.0.x versions. Using custom_location_directives in ood_portal.yml in version 4.0.x (not available for versions below 4.0) centers can unset and or edit these headers. Note that OIDCPassClaimsAs both is the default and centers can set OIDCPassClaimsAs to none or environment to stop passing these headers to the client. Centers that have an OIDC provider with the OIDCPassClaimsAs with none or environment settings can adjust the settings using guidance provided in GHSA-2cwp-8g29-9q32 to unset the mod_auth_openidc_session cookies.
- Record
EUVD-2025-204011- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N - Updated
- 2026-11-02
NVD
7.6
Open OnDemand provides remote web access to supercomputers. In versions 4.0.8 and prior, the Apache proxy allows sensitive headers to be passed to origin servers. This means malicious users can create an origin server on a compute node that record these headers when unsuspecting users connect to it. Maintainers anticipate a patch in a 4.1 release. Workarounds exist for 4.0.x versions. Using custom_location_directives in ood_portal.yml in version 4.0.x (not available for versions below 4.0) centers can unset and or edit these headers. Note that OIDCPassClaimsAs both is the default and centers can set OIDCPassClaimsAs to none or environment to stop passing these headers to the client. Centers that have an OIDC provider with the OIDCPassClaimsAs with none or environment settings can adjust the settings using guidance provided in GHSA-2cwp-8g29-9q32 to unset the mod_auth_openidc_session cookies.
- Record
CVE-2025-66029- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N - Weakness
- CWE-522, CWE-523
- Updated
- 2026-11-02
OSV
7.6
Open OnDemand affected by Apache proxy passing sensitive headers
Open OnDemand provides remote web access to supercomputers. In versions 4.0.8 and prior, the Apache proxy allows sensitive headers to be passed to origin servers. This means malicious users can create an origin server on a compute node that record these headers when unsuspecting users connect to it. Maintainers anticipate a patch in a 4.1 release. Workarounds exist for 4.0.x versions. Using custom_location_directives in ood_portal.yml in version 4.0.x (not available for versions below 4.0) centers can unset and or edit these headers. Note that OIDCPassClaimsAs both is the default and centers can set OIDCPassClaimsAs to none or environment to stop passing these headers to the client. Centers that have an OIDC provider with the OIDCPassClaimsAs with none or environment settings can adjust the settings using guidance provided in GHSA-2cwp-8g29-9q32 to unset the mod_auth_openidc_session cookies.
- Record
CVE-2025-66029- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N - Weakness
- CWE-522, CWE-523
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-66029 is a high vulnerability (CVSS 7.6) in Osc Ondemand, published December 17, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 9th percentile. No source names a fixed version.