Apache: Security Vulnerabilities
Server-Side Request Forgery (SSRF) vulnerability
in Apache HTTP Server on Windows
with AllowEncodedSlashes On and MergeSlashes Off allows to potentially leak NTLM
hashes to a malicious server via SSRF and malicious requests or content
Users are recommended to upgrade to version 2.4.66, which fixes the issue.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-12-05
Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache HTTP Server through environment variables set via the Apache configuration unexpectedly superseding variables calculated by the server for CGI programs.
This issue affects Apache HTTP Server from 2.4.0 through 2.4.65.
Users are recommended to upgrade to version 2.4.66 which fixes the issue.
CVSS Score
6.5
EPSS Score
0.002
Published
2025-12-05
mod_userdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP Server. Users with access to use the RequestHeader directive in htaccess can cause some CGI scripts to run under an unexpected userid.
This issue affects Apache HTTP Server: from 2.4.7 through 2.4.65.
Users are recommended to upgrade to version 2.4.66, which fixes the issue.
CVSS Score
5.4
EPSS Score
0.001
Published
2025-12-05
An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30 days in default configurations), to the backoff timer becoming 0. Attempts to renew the certificate then are repeated without delays until it succeeds.
This issue affects Apache HTTP Server: from 2.4.30 before 2.4.66.
Users are recommended to upgrade to version 2.4.66, which fixes the issue.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-12-05
Critical XXE in Apache Tika tika-core (1.13-3.2.1), tika-pdf-module (2.0.0-3.2.1) and tika-parsers (1.13-1.28.5) modules on all platforms allows an attacker to carry out XML External Entity injection via a crafted XFA file inside of a PDF.
This CVE covers the same vulnerability as in CVE-2025-54988. However, this CVE expands the scope of affected packages in two ways.
First, while the entrypoint for the vulnerability was the tika-parser-pdf-module as reported in CVE-2025-54988, the vulnerability and its fix were in tika-core. Users who upgraded the tika-parser-pdf-module but did not upgrade tika-core to >= 3.2.2 would still be vulnerable.
Second, the original report failed to mention that in the 1.x Tika releases, the PDFParser was in the "org.apache.tika:tika-parsers" module.
CVSS Score
8.4
EPSS Score
0.0
Published
2025-12-04
Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaustion.
This issue affects Apache Struts: from 2.0.0 through 6.7.0, from 7.0.0 through 7.0.3.
Users are recommended to upgrade to version 6.8.0 or 7.1.1, which fixes the issue.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-12-01
Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json data.
Root Cause:
The bRPC json2pb component uses rapidjson to parse json data from the network. The rapidjson parser uses a recursive parsing method by default. If the input json has a large depth of recursive structure, the parser function may run into stack overflow.
Affected Scenarios:
Use bRPC server with protobuf message to serve http+json requests from untrusted network. Or directly use JsonToProtoMessage to convert json from untrusted input.
How to Fix:
(Choose one of the following options)
1. Upgrade bRPC to version 1.15.0, which fixes this issue.
2. Apply this patch: https://github.com/apache/brpc/pull/3099
Note:
No matter which option
you choose, you should know that the fix introduces a recursion depth limit with default value 100. It affects these functions:
ProtoMessageToJson, ProtoMessageToProtoJson, JsonToProtoMessage, and ProtoJsonToProtoMessage.
If your requests contain json or protobuf messages that have a depth exceeding the limit, the request will be failed after applying the fix. You can modify the gflag json2pb_max_recursion_depth to change the limit.
CVSS Score
7.5
EPSS Score
0.007
Published
2025-12-01
Reveals plaintext credentials in the MONITOR command vulnerability in Apache Kvrocks.
This issue affects Apache Kvrocks: from 1.0.0 through 2.13.0.
Users are recommended to upgrade to version 2.14.0, which fixes the issue.
CVSS Score
5.3
EPSS Score
0.001
Published
2025-11-28
Improper Privilege Management vulnerability in Apache Kvrocks.
This issue affects Apache Kvrocks: from v2.9.0 through v2.13.0.
Users are recommended to upgrade to version 2.14.0, which fixes the issue.
CVSS Score
5.4
EPSS Score
0.002
Published
2025-11-28
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache SkyWalking.
This issue affects Apache SkyWalking: <= 10.2.0.
Users are recommended to upgrade to version 10.3.0, which fixes the issue.
CVSS Score
6.1
EPSS Score
0.003
Published
2025-11-27