Red Hat Security AdvisoryRHSA-2026:56869
Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP5 security update
Released 2026-08-19 · Red Hat rating Important · View on Red Hat →
Fixes 32 records
Priority HIGH 82
Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, mak…
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.00688 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-294
Priority HIGH 82
A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via `CURLOPT_STREAM_DEPENDS` or `CURLOPT_STREAM_DEPENDS_E`, subsequently invokes `curl_easy_reset()`, and f…
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.00598 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-416
Priority HIGH 82
libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.01064 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-522
Priority HIGH 80
A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set "super cookies" that bypass the Public Suffix List check.
CVSS 3.1CRITICAL 9.1· Network · No auth · No interaction · EPSS 0.00661 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-201
Priority HIGH 74
When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests.
CVSS 3.1CRITICAL 9.1· Network · No auth · No interaction · EPSS 0.005 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-294
Priority HIGH 72
When a user invokes curl using a schemeless URL combined with `--proto-default` sftp (or scp), a disconnect occurs between the tool layer and libcurl.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00414 · Published 2026-07-03 · Fixed in 8.14.2, 8.16.1 +1 CWE-297
Priority HIGH 72
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uses a proper HTTP/3 server for the initial transfers, and when it makes a second transfer to the same site it has been replaced by the attacker's impostor machine - without a valid certif…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00408 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-200
Priority HIGH 72
libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00396 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-305
Priority HIGH 70
A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even though the TLS configuration mismatches so it should not.
CVSS 3.1HIGH 8.1· Network · Low privileges · No interaction · EPSS 0.00309 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-295
Priority HIGH 68
When a libcurl-based application performs transfers via `SCP://` or `SFTP://` and utilizes the `CURLOPT_SSH_KEYFUNCTION` callback, it may silently accept an untrusted server.
CVSS 3.1HIGH 7.4· Network · No auth · No interaction · EPSS 0.00361 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-297
Priority MEDIUM 63
Successfully using libcurl to do a transfer over a specific HTTP proxy (`proxyA`) with **Digest** authentication and then changing the proxy host to a second one (`proxyB`) for a second transfer, reusing the same handle,…
CVSS 3.1MEDIUM 5.3· Network · No auth · No interaction · EPSS 0.00471 · Published 2026-05-13 · Partial fix · 8.14.2, 8.16.1 +1 CWE-294
Priority MEDIUM 63
When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances.
CVSS 3.1MEDIUM 5.3· Network · No auth · No interaction · EPSS 0.00495 · Published 2026-03-11 · Partial fix · 8.14.2, 8.16.1 +1 CWE-522
Priority MEDIUM 62
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".
CVSS 3.1MEDIUM 6.5· Network · Low privileges · No interaction · EPSS 0.00371 · Published 2026-07-03 · Partial fix · 8.14.2, 8.16.1 +1 CWE-488
Priority MEDIUM 60
curl might erroneously pass on credentials for a first proxy to a second proxy.
CVSS 3.1MEDIUM 5.9· Network · No auth · No interaction · EPSS 0.00719 · Published 2026-05-13 · Partial fix · 8.14.2, 8.16.1 +1 CWE-522
Priority MEDIUM 50
Use After Free vulnerability in Apache HTTP Server with mod_ldap in per-directory configuration This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.00688 · Published 2026-06-08 · Partial fix CWE-416
Priority MEDIUM 49
Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.00504 · Published 2026-06-08 · Fixed CWE-124
Priority MEDIUM 48
A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly manipulate trusted DAV property databases, potentially causing child process crashes.
CVSS 3.1CRITICAL 9.1· Network · No auth · No interaction · EPSS 0.00538 · Published 2026-06-08 · Partial fix CWE-668
Priority MEDIUM 41
Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted content This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.01024 · Published 2026-06-08 · Partial fix CWE-122
Priority MEDIUM 41
A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.01161 · Published 2026-06-08 · Partial fix CWE-122
Priority MEDIUM 41
An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess authors to read files with the privileges of the httpd user.
CVSS 3.1HIGH 8.8· Network · Low privileges · No interaction · EPSS 0.00654 · Published 2026-05-04 · Partial fix CWE-269
Priority MEDIUM 41
SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00909 · Published 2025-07-10 · Partial fix CWE-918
Priority MEDIUM 40
Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassReverseCookie* This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00708 · Published 2026-06-08 · Fixed CWE-122
Priority MEDIUM 40
HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00818 · Published 2025-07-10 · Partial fix CWE-20
Priority LOW 39
Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted.
CVSS 3.1HIGH 7.3· Network · No auth · No interaction · EPSS 0.00479 · Published 2026-06-08 · Partial fix CWE-416
Priority LOW 39
Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache HTTP Server with an attacker controlled backend FTP server.
CVSS 3.1HIGH 7.3· Network · No auth · No interaction · EPSS 0.00583 · Published 2026-06-08 · Partial fix CWE-835
Priority LOW 39
Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled OCSP server This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
CVSS 3.1HIGH 7.3· Network · No auth · No interaction · EPSS 0.00741 · Published 2026-06-08 · Partial fix CWE-126
Priority LOW 36
Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response languages.
CVSS 3.1MEDIUM 6.5· Network · No auth · No interaction · EPSS 0.00545 · Published 2026-06-08 · Partial fix CWE-125
Priority LOW 35
curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy.
CVSS 3.1MEDIUM 6.5· Network · No auth · No interaction · EPSS 0.00448 · Published 2026-03-11 · Partial fix · 8.14.2, 8.16.1 +1 CWE-305
Priority LOW 29
libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTP(S) request after a Negotiate-authenticated one, when both use the same host.
CVSS 3.1MEDIUM 6.5· Network · No auth · No interaction · EPSS 0.00414 · Published 2026-05-13 · Partial fix · 8.14.2, 8.16.1 +1 CWE-305
Priority LOW 29
libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated HTTP or HTTPS request.
CVSS 3.1MEDIUM 6.5· Network · Low privileges · No interaction · EPSS 0.00297 · Published 2026-03-11 · Partial fix · 8.14.2, 8.16.1 +1 CWE-305
Priority LOW 28
A cross-site scripting vulnerability exists in mod_proxy_ftp's HTML directory list generation in Apache HTTP Server 2.4.67 and earlier when listing FTP directory contents either via forward or reverse proxy configuration…
CVSS 3.1MEDIUM 6.1· Network · No auth · User interaction · EPSS 0.00481 · Published 2026-06-08 · Partial fix CWE-79
Priority LOW 24
Improper Privilege Management vulnerability in Apache HTTP Server 2.4.67 and earlier allows local .htaccess authors to read files with the privileges of the httpd user.
CVSS 3.1MEDIUM 5.5· Local · Low privileges · No interaction · EPSS 0.00177 · Published 2026-06-08 · Partial fix CWE-269