GHSA-9wx4-h78v-vm56
Requests `Session` object does not verify requests after making first request with verify=False
At a glance
- Published
- Updated
- CVE
- CVE-2024-35195
- Aliases
- PYSEC-2026-1873
- CVSS_V3
- CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
Description
When using a `requests.Session`, if the first request to a given origin is made with `verify=False`, TLS certificate verification may remain disabled for all subsequent requests to that origin, even if `verify=True` is explicitly specified later. This occurs because the underlying connection is reused from the session's connection pool, causing the initial TLS verification setting to persist for the lifetime of the pooled connection. As a result, applications may unintentionally send requests without certificate verification, leading to potential man-in-the-middle attacks and compromised confidentiality or integrity. This behavior affects versions of `requests` prior to 2.32.0.
Affected packages
| Package | Versions |
|---|---|
| PyPI · requests | introduced 0, fixed 2.32.0 |
References
- https://github.com/psf/requests/security/advisories/GHSA-9wx4-h78v-vm56 WEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-35195 ADVISORY
- https://github.com/psf/requests/pull/6655 WEB
- https://github.com/psf/requests/commit/a58d7f2ffb4d00b46dca2d70a3932a0b37e22fac WEB
- https://github.com/psf/requests PACKAGE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IYLSNK5TL46Q6XPRVMHVWS63MVJQOK4Q WEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N7WP6EYDSUOCOJYHDK5NX43PYZ4SNHGZ WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |