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CVE-2026-128241

Medium priority
Needs evaluation

The xmlwf tool in libexpat through 2.10.0 contains a symlink following vulnerability because -d output mode opens files with fopen("wb"), which follows symbolic links. Local attackers with write access to the output directory can...

23 affected packages

expat, apache2, apr-util, cmake, ghostscript...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
expat Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
apache2 Not affected Not affected Not affected Not affected Not affected
apr-util Not affected Not affected Not affected Not affected Not affected
cmake Not affected Not affected Not affected Not affected Not affected
ghostscript Not affected Not affected Not affected Not affected Not affected
texlive-bin Not affected Not affected Not affected Not affected Not affected
xmlrpc-c Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
vnc4 Not in release Not in release Not in release — Needs evaluation
wbxml2 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
swish-e Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
insighttoolkit4 Not in release Not in release Needs evaluation Needs evaluation Needs evaluation
cadaver Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
gdcm Not affected Not affected Not affected Not affected Needs evaluation
ayttm Not in release Not in release Not in release — —
cableswig Not in release Not in release Not in release — —
coin3 Not affected Not affected Not affected Not affected Needs evaluation
matanza Ignored Ignored Ignored Ignored Needs evaluation
tdom Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
vtk Not in release Not in release Not in release — —
smart Not in release Not in release Not in release — Needs evaluation
firefox Not affected Not affected Not affected — —
thunderbird Not affected Not affected Not affected — —
libxmltok Not in release Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-126136

Medium priority
Needs evaluation

For Exchange accounts using EWS or Microsoft Graph with OAuth2 authentication, Thunderbird sent the OAuth2 access token to the server even when the configured server URL used unencrypted HTTP. An attacker able to observe network...

1 affected package

thunderbird

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Needs evaluation Needs evaluation Needs evaluation — —
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CVE-2026-126135

Medium priority
Needs evaluation

If an attacker was able to perform a man-in-the-middle attack on an SMTP or POP3 server connection using STARTTLS, the attacker could inject server responses before the TLS handshake completed. Thunderbird would process these...

1 affected package

thunderbird

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Needs evaluation Needs evaluation Needs evaluation — —
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CVE-2026-126134

Medium priority
Needs evaluation

Thunderbird allowed feed subscriptions to file: URLs that point to a network share. If a user was tricked into subscribing to such a URL, Thunderbird connected to the attacker's server when fetching the feed. Windows then sent the...

1 affected package

thunderbird

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Needs evaluation Needs evaluation Needs evaluation — —
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CVE-2026-126133

Medium priority
Needs evaluation

When a CalDAV or ICS calendar was accessed through an HTTP proxy that requested authentication, Thunderbird could answer the proxy with the calendar server's username and password. This affected both setting up a new calendar and...

1 affected package

thunderbird

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Needs evaluation Needs evaluation Needs evaluation — —
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CVE-2026-126132

Medium priority
Needs evaluation

When a message was forwarded inline, edited as new, or had an attachment dragged into a compose window, a specially crafted link attachment (a .desktop file on Linux, or a .url or .lnk file on Windows) was replaced with the...

1 affected package

thunderbird

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Needs evaluation Needs evaluation Needs evaluation — —
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CVE-2026-124952

Medium priority
Vulnerable

Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox ESR 115.45.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
thunderbird Not affected Not affected Vulnerable — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
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CVE-2026-124951

Medium priority
Vulnerable

Privilege escalation in the Nimbus Desktop Client component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
thunderbird Not affected Not affected Vulnerable — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
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CVE-2026-124950

Medium priority
Vulnerable

Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 160 and Thunderbird 160.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
thunderbird Not affected Not affected Vulnerable — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
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CVE-2026-124949

Medium priority
Vulnerable

Other issue in the SVG component. This vulnerability was fixed in Firefox 160 and Thunderbird 160.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not affected — —
thunderbird Not affected Not affected Vulnerable — —
mozjs38 Not in release Not in release Not in release — Needs evaluation
mozjs52 Not in release Not in release Not in release Ignored Ignored
mozjs68 Not in release Not in release Not in release Ignored —
mozjs78 Not in release Not in release Ignored — —
mozjs91 Not in release Not in release Ignored — —
mozjs102 Not in release Ignored Ignored — —
mozjs115 Not in release Ignored Not in release — —
Show all 9 packages Show less packages