A vulnerability exists where a connection requiring TLS incorrectly reuses an
existing unencrypted connection from the same connection pool. If an initial
transfer is made in clear-text (via IMAP, SMTP, or POP3), a subsequent request
to that same host bypasses the TLS requirement and instead transmit data
unencrypted.
existing unencrypted connection from the same connection pool. If an initial
transfer is made in clear-text (via IMAP, SMTP, or POP3), a subsequent request
to that same host bypasses the TLS requirement and instead transmit data
unencrypted.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| curl | curl | unaffected |
|
No data.
No data.
OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.
| Vendors | Products |
|---|---|
|
Curl
Subscribe
|
Curl
Subscribe
|
Advisories
| Source | ID | Title |
|---|---|---|
 Ubuntu USN |
USN-8227-1 | curl vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 13 May 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Wed, 13 May 2026 09:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in curl. A remote attacker could exploit this by initiating an unencrypted connection (via IMAP, SMTP, or POP3) and then making a subsequent request to the same host that requires Transport Layer Security (TLS). Due to incorrect connection reuse, the subsequent request would bypass the TLS requirement, leading to the transmission of sensitive information in cleartext. This vulnerability, categorized as Cleartext Transmission of Sensitive Information (CWE-319), results in information disclosure. | A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same connection pool. If an initial transfer is made in clear-text (via IMAP, SMTP, or POP3), a subsequent request to that same host bypasses the TLS requirement and instead transmit data unencrypted. |
| Title | curl: curl: Information disclosure due to incorrect TLS connection reuse | connection reuse ignores TLS requirement |
| References |
|
Fri, 01 May 2026 01:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Curl
Curl curl |
|
| Vendors & Products |
Curl
Curl curl |
Fri, 01 May 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in curl. A remote attacker could exploit this by initiating an unencrypted connection (via IMAP, SMTP, or POP3) and then making a subsequent request to the same host that requires Transport Layer Security (TLS). Due to incorrect connection reuse, the subsequent request would bypass the TLS requirement, leading to the transmission of sensitive information in cleartext. This vulnerability, categorized as Cleartext Transmission of Sensitive Information (CWE-319), results in information disclosure. | |
| Title | curl: curl: Information disclosure due to incorrect TLS connection reuse | |
| Weaknesses | CWE-319 | |
| References |
| |
| Metrics |
threat_severity
|
cvssV3_1
|
Projects
Sign in to view the affected projects.
MITRE
Status: PUBLISHED
Assigner: curl
Published:
Updated: 2026-05-13T19:30:04.825Z
Reserved: 2026-03-26T05:38:02.098Z
Link: CVE-2026-4873
Vulnrichment
No data.
NVD
Status : Undergoing Analysis
Published: 2026-05-13T13:01:55.893
Modified: 2026-05-13T14:50:58.767
Link: CVE-2026-4873
Redhat
OpenCVE Enrichment
Updated: 2026-05-13T10:30:16Z
Weaknesses