Description
emacsclient-mail.desktop in Emacs 28.1 through 28.2 is vulnerable to Emacs Lisp code injections through a crafted mailto: URI with unescaped double-quote characters. It is fixed in 29.0.90.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | emacs | 1:28.2+1-13 | — |
| Debian 13 | emacs | 1:28.2+1-13 | — |
| Debian 12 | emacs | 1:28.2+1-13 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | xemacs21 +1 | No fix yet | — |
| Ubuntu 26.04 LTS | xemacs21 +1 | No fix yet | — |
| Ubuntu 25.10 | xemacs21 +1 | No fix yet | — |
| Ubuntu 24.04 LTS | xemacs21 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | xemacs21 +1 | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | xemacs21 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | xemacs21 +1 | No fix yet | — |
| Ubuntu 16.04 LTS | xemacs21 +1 | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | emacs | 28.2-3.1 | openSUSE-SU-2024:12777-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | emacs | 28.2-r6 | — |
| Alpine v3.23 | emacs | 28.2-r6 | — |
| Alpine v3.22 | emacs | 28.2-r6 | — |
| Alpine v3.21 | emacs | 28.2-r6 | — |
| Alpine v3.20 | emacs | 28.2-r6 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | emacs | 28.2-r6 | — |
| Alpine v3.18 | emacs | 28.2-r6 | — |
| Alpine v3.17 | emacs | 28.2-r3 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | emacs +6 | 1:28.2-3.amzn2023.0.4 | ALAS2023-2023-134 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | emacs | 28.2-4 | — |
Advisories 4
- WID-SEC-2023-2917 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 30, 2026
- openSUSE-SU-2024:12777-1 emacs-28.2-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2023-134 Important: emacs security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Mar 22, 2023
- WID-SEC-2023-0608 GNU Emacs: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Mar 8, 2023
References
- https://www.openwall.com/lists/oss-security/2023/03/08/2
- http://git.savannah.gnu.org/cgit/emacs.git/commit/?h=emacs-29&id=3c1693d08b0a71d40a77e7b40c0ebc42dca2d2cc
- [oss-security] 20230309 Re: Shell command and Emacs Lisp code injection in emacsclient-mail.desktop mailing-list
- https://www.gabriel.urdhr.fr/2023/06/08/emacsclient-mail-shell-elisp-injections/