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apache2 vulnerabilities

Vulnerabilities published for apache2 in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 96

  1. ALPINE-CVE-2025-49812

    High · CVSS 7.4Fix available

    ALPINE-CVE-2025-49812

    In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade. Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade.

    • Update to 2.4.64-r0
    Published Updated
  2. ALPINE-CVE-2025-49630

    High · CVSS 7.5Fix available

    ALPINE-CVE-2025-49630

    In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in mod_proxy_http2. Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".

    • Update to 2.4.64-r0
    Published Updated
  3. ALPINE-CVE-2025-23048

    Critical · CVSS 9.1Fix available

    ALPINE-CVE-2025-23048

    In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.

    • Update to 2.4.64-r0
    Published Updated
  4. ALPINE-CVE-2024-47252

    High · CVSS 7.5Fix available

    ALPINE-CVE-2024-47252

    Insufficient escaping of user-supplied data in mod_ssl in Apache HTTP Server 2.4.63 and earlier allows an untrusted SSL/TLS client to insert escape characters into log files in some configurations. In a logging configuration where CustomLog is used with "%{varname}x" or "%{varname}c" to log variables provided by mod_ssl such as SSL_TLS_SNI, no escaping is performed by either mod_log_config or mod_ssl and unsanitized data provided by the client may appear in log files.

    • Update to 2.4.64-r0
    Published Updated
  5. ALPINE-CVE-2024-43394

    High · CVSS 7.5Fix available

    ALPINE-CVE-2024-43394

    Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via  mod_rewrite or apache expressions that pass unvalidated request input. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.63. Note:  The Apache HTTP Server Project will be setting a higher bar for accepting vulnerability reports regarding SSRF via UNC paths. The server offers limited protection against administrators directing the server to open UNC paths. Windows servers should limit the hosts they will connect over via SMB based on the nature of NTLM authentication.

    • Update to 2.4.64-r0
    Published Updated
  6. ALPINE-CVE-2024-43204

    High · CVSS 7.5Fix available

    ALPINE-CVE-2024-43204

    SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker.  Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request. Users are recommended to upgrade to version 2.4.64 which fixes this issue.

    • Update to 2.4.64-r0
    Published Updated
  7. ALPINE-CVE-2024-42516

    High · CVSS 7.5Fix available

    ALPINE-CVE-2024-42516

    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. This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue. Users are recommended to upgrade to version 2.4.64, which fixes this issue.

    • Update to 2.4.64-r0
    Published Updated
  8. ALPINE-CVE-2024-40898

    High · CVSS 7.5Fix available

    ALPINE-CVE-2024-40898

    SSRF in Apache HTTP Server on Windows with mod_rewrite in server/vhost context, allows to potentially leak NTML hashes to a malicious server via SSRF and malicious requests. Users are recommended to upgrade to version 2.4.62 which fixes this issue. 

    • Update to 2.4.62-r0
    Published Updated
  9. ALPINE-CVE-2024-40725

    Medium · CVSS 5.3Fix available

    ALPINE-CVE-2024-40725

    A partial fix for  CVE-2024-39884 in the core of Apache HTTP Server 2.4.61 ignores some use of the legacy content-type based configuration of handlers. "AddType" and similar configuration, under some circumstances where files are requested indirectly, result in source code disclosure of local content. For example, PHP scripts may be served instead of interpreted. Users are recommended to upgrade to version 2.4.62, which fixes this issue.

    • Update to 2.4.62-r0
    Published Updated
  10. ALPINE-CVE-2024-39884

    Medium · CVSS 6.2Fix available

    ALPINE-CVE-2024-39884

    A regression in the core of Apache HTTP Server 2.4.60 ignores some use of the legacy content-type based configuration of handlers.   "AddType" and similar configuration, under some circumstances where files are requested indirectly, result in source code disclosure of local content. For example, PHP scripts may be served instead of interpreted. Users are recommended to upgrade to version 2.4.61, which fixes this issue.

    • Update to 2.4.61-r0
    Published Updated
  11. ALPINE-CVE-2024-39573

    High · CVSS 7.5Fix available

    ALPINE-CVE-2024-39573

    Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

    • Update to 2.4.60-r0
    Published Updated
  12. ALPINE-CVE-2024-38476

    Critical · CVSS 9.8Fix available

    ALPINE-CVE-2024-38476

    Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

    • Update to 2.4.60-r0
    Published Updated
  13. ALPINE-CVE-2024-38475

    Critical · CVSS 9.1Fix available

    ALPINE-CVE-2024-38475

    Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected.  Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.

    • Update to 2.4.60-r0
    Published Updated
  14. ALPINE-CVE-2024-38474

    Critical · CVSS 9.8Fix available

    ALPINE-CVE-2024-38474

    Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI. Users are recommended to upgrade to version 2.4.60, which fixes this issue. Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified.

    • Update to 2.4.60-r0
    Published Updated
  15. ALPINE-CVE-2024-38473

    High · CVSS 8.1Fix available

    ALPINE-CVE-2024-38473

    Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

    • Update to 2.4.60-r0
    Published Updated
  16. ALPINE-CVE-2024-38472

    High · CVSS 7.5Fix available

    ALPINE-CVE-2024-38472

    SSRF in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via SSRF and malicious requests or content Users are recommended to upgrade to version 2.4.60 which fixes this issue.  Note: Existing configurations that access UNC paths will have to configure new directive "UNCList" to allow access during request processing.

    • Update to 2.4.60-r0
    Published Updated

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