CVE-2026-104269 ModSecurity: RFC 2231 `filename*` Parameter Bypasses Multipart Filename Rules on RFC-Compliant Backends (Go, Python, Node, Java)

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. From 3.0.0 until 3.0.17, ModSecurity's multipart parser does not apply the RFC 2231 filename parameter precedence used by common Go, Python, Node.js, and Java application parsers. A...

CVE-2026-104269

The ModSecurity WAF engine (versions 3.0.0 through 3.0.17) contains a vulnerability where the multipart parser fails to follow RFC 2231 filename* parameter precedence. This discrepancy allows an attacker to provide a benign filename parameter for ModSecurity while using a different encoded filena...

openSUSE 16 Security Update : perl-MIME-tools (openSUSE-SU-2026:22226-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:22226-1 advisory. Changes in perl-MIME-tools: - updated to 5.522.0 5.522 5.522 VERSION 5.522 RELEASED Many security issues were addressed see the following ten CV...

adups-get-super-serial

adups-get-super-serial CVE-2015-2231 Proof of Concept The POC I was using to demonstrate CVE-2015-2231 'Get Super Serial'. Was asked by a few people to post it so they could use similar things on other ADUPS firmware based devices which have this vulnerability. Cleaning up the laptop and posting...

CVE-2024-39929

CVE-2024-39929 PoC Vulnerability Brief Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mimefilename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users. How does this...

SUSE CVE-2026-116269

MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename. A parameter such as filename=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips...

DEBIAN-CVE-2026-116269

MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename. A parameter such as filename=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips...

CVE-2026-116265

MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations. The boundary ambiguity checks look only at a plain boundary= parameter, and a boundary split into RFC 2231 sections boundary0=, boundary1= and so on is joined after...

CVE-2026-116269

MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename. A parameter such as filename=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips...

EUVD-2026-112301

MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename. A parameter such as filename=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips...

CVE-2026-116269

The MIME::Field::ParamVal component in Perl (specifically within MIME-tools ) versions before 5.521 is vulnerable to an interpretation conflict (CWE-436). When parsing RFC 2231 encoded filenames containing hyphenated language tags (e.g., filename*=utf-8'en-US'payload.exe), the decoder fails to re...

CVE-2026-116269 MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename

MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename. A parameter such as filename=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips...

CVE-2026-116269

MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename. A parameter such as filename=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips...

CVE-2026-116265

The MIME::Field::ParamVal component in MIME-tools (versions before 5.521 for Perl ) fails to flag ambiguous multipart boundaries written as RFC 2231 continuations. The root cause is that boundary ambiguity checks only target plain parameters; boundaries split into sections are joined after proces...

CVE-2026-116265 MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations

MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations. The boundary ambiguity checks look only at a plain boundary= parameter, and a boundary split into RFC 2231 sections boundary0=, boundary1= and so on is joined after...

CVE-2026-116269

MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename. A parameter such as filename=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips...

PT-2026-129083

Name of the Vulnerable Software and Affected Versions MIME::Field::ParamVal versions prior to 5.521 Description An issue exists where an RFC 2231 filename containing a hyphenated language tag is converted into an empty recommended filename. This occurs because a parameter like...

CVE-2026-116265

MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations. The boundary ambiguity checks look only at a plain boundary= parameter, and a boundary split into RFC 2231 sections boundary0=, boundary1= and so on is joined after...

CVE-2026-116265: Interpretation Conflict

MIME::Field::ParamVal versions before 5.521 for Perl do not flag an ambiguous multipart boundary written as RFC 2231 continuations. The boundary ambiguity checks look only at a plain boundary= parameter, and a boundary split into RFC 2231 sections boundary0=, boundary1= and so on is joined after...

CVE-2026-116269

MIME::Field::ParamVal versions before 5.521 for Perl turn an RFC 2231 filename with a hyphenated language tag into an empty recommended filename. A parameter such as filename=utf-8'en-US'payload.exe is converted to an encoded word with the language tag appended to the charset. The decoder strips...