252 matches found
wrong reuse for different services
libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services". libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...
PT-2026-51746
Name of the Vulnerable Software and Affected Versions libcurl affected versions not specified Description A logical error in the connection pooling mechanism allows the software to reuse an incorrect connection for Negotiate-authenticated requests. This occurs even when the requests are configure...
CVE-2026-6734
A flaw was found in undici. When using Socks5ProxyAgent, undici incorrectly reuses a single connection pool across different origins. This can lead to cross-origin request routing, where sensitive credentials and data intended for one destination are sent to another. Consequently, responses from...
PT-2026-51741
Name of the Vulnerable Software and Affected Versions libcurl affected versions not specified Description An issue exists in the certificate authentication procedure where the library maintains a connection pool for reusing connections in subsequent transfers. If a handle initially uses the defau...
undici: undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing
A flaw was found in undici. When using Socks5ProxyAgent, undici incorrectly reuses a single connection pool across different origins. This can lead to cross-origin request routing, where sensitive credentials and data intended for one destination are sent to another. Consequently, responses from...
OESA-2026-2453 curl security update
cURL is a computer software project providing a library libcurl and command-line tool curl for transferring data using various protocols. Security Fixes: A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same connection pool. If...
OESA-2026-2452 curl security update
cURL is a computer software project providing a library libcurl and command-line tool curl for transferring data using various protocols. Security Fixes: A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same connection pool. If...
Astra Linux – Vulnerability in curl
A authentication bypass vulnerability exists in libcurl prior to v8.0.0. It reuses an previously established SSH connection, even though one SSH option has been modified, which should prevent such reuse. libcurl maintains a pool of previously used connections and can reuse them for subsequent...
curl: TLS peer-verification bypass via mid-transfer ssl_config mutation
Hi all, We want to report a TLS peer-verification issue on current master. The trigger is narrow and requires a specific application usage pattern, but when it fires, a transfer that requests CURLOPTSSLVERIFYPEER=1 can reuse a TLS connection that was established with peer verification disabled...
EUVD-2026-29922
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 transm...
ALPINE-CVE-2026-4873
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 transm...
CVE-2026-4873 connection reuse ignores TLS requirement
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 transm...
CVE-2026-4873
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 transm...
The vulnerability of PostgreSQL PgBouncer’s connection pool software, related to the swapping of the zero pointer, allows a hacker to trigger a service failure.
The vulnerability of the PostgreSQL PgBouncer connection pool software relates to the assignment of the null pointer. Exploiting this vulnerability could allow a malicious actor to cause service failures...
RCE (Remote Code Execution) at c3p0 dependency in Crucible Server
This High severity RCE Remote Code Execution vulnerability was introduced in version 4.9.0 of Crucible Server. This RCE Remote Code Execution vulnerability, with a CVSS Score of 8.9 and a CVSS Vector of code:java CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H code allows an...
curl: ignoring 'options' when doing connection reuse
libcurl contains a significant logic flaw in its connection pool matching mechanism. When a transfer specifies a required authentication policy—such as a specific SASL mechanism e.g., ;AUTH=GSSAPI or a restricted set of SSH authentication types CURLOPTSSHAUTHTYPES—libcurl fails to verify these...
curl: Use-After-Free race condition in url_move_hostname() via shared connection pool
Summary: In lib/url.c, urlconnreuseadjust calls urlmovehostname which frees conn-host.rawalloc and conn-host.encalloc via Curlsafefree and Curlfreeidnconvertedhostname after Curlcpoolfind has already released the connection pool lock. A second thread doing a concurrent pool lookup still holds tha...
SUSE CVE-2026-27830
c3p0, a JDBC Connection pooling library, is vulnerable to attack via maliciously crafted Java-serialized objects and javax.naming.Reference instances. Several c3p0 ConnectionPoolDataSource implementations have a property called userOverridesAsString which conceptually represents a Map. Prior to...
Deserialization of Untrusted Data
Overview com.mchange:c3p0 is a mature, highly concurrent JDBC Connection pooling library, with support for caching and reuse of PreparedStatements. Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the userOverridesAsString property of...
CVE-2026-27830 c3p0 vulnerable to Remote Code Execution via unsafe deserialization of userOverridesAsString property
c3p0, a JDBC Connection pooling library, is vulnerable to attack via maliciously crafted Java-serialized objects and javax.naming.Reference instances. Several c3p0 ConnectionPoolDataSource implementations have a property called userOverridesAsString which conceptually represents a Map. Prior to...