Description
Due to insufficient escaping of the special characters in the "copy as cURL" feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system.
*This bug only affects Firefox for Windows. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox ESR 128.10, Firefox ESR 115.23, and Thunderbird 128.10.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | — | 115.23 |
| Mozilla | Thunderbird | — | 128.10 |
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SLES 15 SP6 | MozillaThunderbird | 128.10.0-150200.8.212.1 | SUSE-SU-2025:1506-1 |
| SLES 15 SP5 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SLES 15 SP4 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SLES 15 SP3 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SLES for SAP 15 SP4 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SLE HPC 15 SP5 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SLE HPC 15 SP4 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 128.10.0-1.1 | openSUSE-SU-2025:15042-1 |
| openSUSE Leap 15.6 | MozillaFirefox | 128.10.0-150200.152.179.1 | SUSE-SU-2025:1436-1 |
| openSUSE Leap 15.6 | MozillaThunderbird | 128.10.0-150200.8.212.1 | SUSE-SU-2025:1506-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | firefox | 128.10-r0 | — |
Advisories 6
- openSUSE-SU-2025:15042-1 MozillaThunderbird-128.10.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:1436-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1506-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1850 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 17, 2025
- WID-SEC-2025-0901 Mozilla Firefox, Firefox ESR, Thunderbird and Thunderbird ESR: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 29, 2025
- NCSC-2025-0142 Kwetsbaarheden verholpen in Mozilla Firefox en Thunderbird NCSC-NL (Netherlands) · May 6, 2025