HIGHVulnerability
CVE-2026-9546
A vulnerability in libcurl caused the HTTP `Referer:` header to persist even when explicitly cleared. While the documentation states that passing NULL to `CURLOPT_REFERER` suppresses the header, the option failed to clear the internal state. As a result, the previous referrer string was erroneously reused and sent in subsequent requests, potentially leaking sensitive information to unintended servers.
Properties
- severity
- HIGH
- score
- 7.5
- epss_score
- 0.00494
- cve_id
- CVE-2026-9546
- signal_observed_at
- 2026-09-15T07:22:05+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- published_at
- 2026-07-03T07:16:25.893
- last_modified
- 2026-09-15T07:16:35.130
- epss_percentile
- 0.4096
Related Entities (4)
ENRICHED_BY (1)
→[Source]FIRST EPSS
DESCRIBED_BY (1)
→[Source]NVD
AFFECTS_PRODUCT (1)
→[Product]
HAS_WEAKNESS (1)
→[Weakness]Exposure of Sensitive Information to an Unauthorized Actor
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