CVE-2026-9545
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
exposing HTTP/3 early data
In this scenario, libcurl first uses a proper HTTP/3 server for the initial transfers, and when it makes a second transfer to the same site it has been replaced by the attacker's impostor machine - without a valid certificate. When libcurl returns to the hostname the second time with a cached SSL session (`CURLOPT_SSL_SESSIONID_CACHE` is not disabled) and early data enabled (the `CURLSSLOPT_EARLYDATA` bit is set in `CURLOPT_SSL_OPTIONS`), libcurl might send off the second request's bytes on that new connection *before* enforcing the certificate verification failure. Potentially leaking sensitive information.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
curl
- Vendor
- curl
- Product
- curl
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 8.11.0 | affected | semver | 8.14.2 | Unavailable | None listed |
| 8.15.0 | affected | semver | 8.16.1 | Unavailable | None listed |
| 8.17.0 | affected | semver | 8.20.1 | Unavailable | None listed |
curl
- Vendor
- curl
- Product
- curl
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 962097b8dd44ed5b9e7984bc1cdffdbdd566857f | affected | git | 7b9613fa9b1a5e04301a3920eef58e8138dad05e | Unavailable | None listed |
curl
- Vendor
- curl
- Product
- curl
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 8.20.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.19.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.18.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.17.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.16.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.15.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.14.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.14.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.13.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.12.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.12.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.11.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 8.11.0 | affected | Unavailable | Unavailable | Unavailable | None listed |