Distribution advisory
This page covers CVE-2023-45803 as tracked by BellSoft, for the package py3-urllib3. The fix is available in version 1.26.18-r0; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached from an adjacent network, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
- Attack vector: Adjacent network — the attacker has to sit on the same local or logical network.
- Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
- Privileges required: High — administrative rights are needed first.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: High — total loss, or loss the attacker controls.
- Integrity impact: None.
- Availability impact: None.
Weakness class
BELL-CVE-2023-45803 is classified as CWE-200: Exposure of Sensitive Information. Information that should stay internal is disclosed to someone who is not authorised to see it.
Affected software
BELL-CVE-2023-45803 is recorded against 1 package.
- py3-urllib3 (from 1.26.12-r1 up to 1.26.18-r0)
Timeline and source
Published on 17 October 2023 and last revised on 26 January 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
docs.bell-sw.com (Advisory)
Other advisories for this package
py3-urllib3 has other advisories on record. If you are patching this one, these are worth checking on the same host:
Same weakness in other software
These advisories are the same class of weakness (CWE-200: Exposure of Sensitive Information) in other software:
