From cfa851829cfd53bdb9c0476e5e2562c209e036f1 Mon Sep 17 00:00:00 2001 From: Al Snow <43523+jasnow@users.noreply.github.com> Date: Mon, 17 Aug 2026 20:24:34 -0400 Subject: [PATCH 1/2] One new mail gem advisory --- gems/mail/GHSA-mvxr-6m87-mv2q.yml | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 gems/mail/GHSA-mvxr-6m87-mv2q.yml diff --git a/gems/mail/GHSA-mvxr-6m87-mv2q.yml b/gems/mail/GHSA-mvxr-6m87-mv2q.yml new file mode 100644 index 0000000000..ad89b91919 --- /dev/null +++ b/gems/mail/GHSA-mvxr-6m87-mv2q.yml @@ -0,0 +1,28 @@ +--- +gem: mail +ghsa: mvxr-6m87-mv2q +url: https://github.com/mikel/mail/security/advisories/GHSA-mvxr-6m87-mv2q +title: Email address spoofing via malformed RFC 2047 encoded-words in mail +date: 2026-07-1 +description: | + ## Summary + + Mail::Utilities.q_value_decode and Mail::Utilities.b_value_decode + decoded only the first RFC 2047 encoded-word in a string and used + an overly greedy pattern to match the charset token. A crafted, + malformed encoded-word embedded in an address display name or local + part could cause the decoded output to differ from what a human + reviewer or downstream parser would expect, allowing an attacker + to spoof the apparent sender/recipient address. +cvss_v3: 5.1 +patched_versions: + - ">= 2.9.1" +related: + url: + - https://rubygems.org/gems/mail/versions/2.9.1 + - https://github.com/mikel/mail/releases/tag/2.9.1 + - https://github.com/mikel/mail/pull/1664 + - https://github.com/mikel/mail/security/advisories/GHSA-mvxr-6m87-mv2q +notes: | + - cvss_v3, date from repo GHSA + - No CVE value. From 9bade9d9af5011bbf245c187220af216d545cc95 Mon Sep 17 00:00:00 2001 From: Al Snow <43523+jasnow@users.noreply.github.com> Date: Mon, 17 Aug 2026 20:31:35 -0400 Subject: [PATCH 2/2] Fix date format in GHSA-mvxr-6m87-mv2q.yml --- gems/mail/GHSA-mvxr-6m87-mv2q.yml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gems/mail/GHSA-mvxr-6m87-mv2q.yml b/gems/mail/GHSA-mvxr-6m87-mv2q.yml index ad89b91919..9d9b51e94e 100644 --- a/gems/mail/GHSA-mvxr-6m87-mv2q.yml +++ b/gems/mail/GHSA-mvxr-6m87-mv2q.yml @@ -3,7 +3,7 @@ gem: mail ghsa: mvxr-6m87-mv2q url: https://github.com/mikel/mail/security/advisories/GHSA-mvxr-6m87-mv2q title: Email address spoofing via malformed RFC 2047 encoded-words in mail -date: 2026-07-1 +date: 2026-07-01 description: | ## Summary