USN-8099-1: curl Ubuntu
Vulnerability summary
USN-8099-1 is a vulnerability in curl Ubuntu with no CVSS score yet.
No CVSS vector published; no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 3 · Downstream 0 · Related 3Timeline
- 16-03-2026PublishedVulnerability first disclosed.
- 27-04-2026Last modifiedVulnerability information updated.
Description
curl vulnerabilities Zhicheng Chen discovered that curl could incorrectly reuse the wrong connection for Negotiate-authenticated HTTP or HTTPS requests. This could result in the use of credentials from a different connection, contrary to expectations. This issue only affected Ubuntu 20.04 LTS. (CVE-2026-1965) It was discovered that curl incorrectly leaked OAuth2 bearer tokens when following a redirect. This could result in tokens being sent to the wrong host, contrary to expectations. This issue only affected Ubuntu 20.04 LTS. (CVE-2026-3783) Muhamad Arga Reksapati discovered that curl incorrectly reused existing HTTP proxy connections even if the request used different credentials. This could result in the use of incorrect credentials, contrary to expectations. (CVE-2026-3784)
CVSS metrics
Risk metrics not yet published.
EPSS trend
No EPSS score has been published for this record yet.
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: not stated in public data.
Ubuntu1 product
- curl< 7.58.0-2ubuntu3.24+esm8 | < 7.68.0-1ubuntu2.25+esm3
1 vendor · 1 product