Debian Firefox vulnerabilities

CVE-2025-5263 [MEDIUM] CVE-2025-5263: firefox - Error handling for script execution was incorrectly isolated from web content, w... Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11. Scope: local sid: resolved (fixed in 139.0-1)

CVE-2025-6429 [MEDIUM] CVE-2025-6429: firefox - Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com ... Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an `embed` tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. This vulnerability affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12. Scope: local s

CVE-2025-5271 [MEDIUM] CVE-2025-5271: firefox - Previewing a response in Devtools ignored CSP headers, which could have allowed ... Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability affects Firefox < 139 and Thunderbird < 139. Scope: local sid: resolved (fixed in 139.0-1)

CVE-2025-11718 [MEDIUM] CVE-2025-11718: firefox - When the address bar was hidden due to scrolling on Android, a malicious page co... When the address bar was hidden due to scrolling on Android, a malicious page could create a fake address bar to fool the user in response to a visibilitychange event This vulnerability affects Firefox < 144. Scope: local sid: resolved (fixed in 144.0-1)

CVE-2025-3028 [MEDIUM] CVE-2025-3028: firefox - JavaScript code running while transforming a document with the XSLTProcessor cou... JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free. This vulnerability affects Firefox < 137, Firefox ESR < 115.22, Firefox ESR < 128.9, Thunderbird < 137, and Thunderbird < 128.9. Scope: local sid: resolved (fixed in 137.0-1)

CVE-2025-6434 [MEDIUM] CVE-2025-6434: firefox - The exception page for the HTTPS-Only feature, displayed when a website is opene... The exception page for the HTTPS-Only feature, displayed when a website is opened via HTTP, lacked an anti-clickjacking delay, potentially allowing an attacker to trick a user into granting an exception and loading a webpage over HTTP. This vulnerability affects Firefox < 140 and Thunderbird < 140. Scope: local sid: resolved (fixed in 140.0-1)

CVE-2025-14331 [MEDIUM] CVE-2025-14331: firefox - Same-origin policy bypass in the Request Handling component. This vulnerability ... Same-origin policy bypass in the Request Handling component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6. Scope: local sid: resolved (fixed in 146.0-1)

CVE-2025-3608 [MEDIUM] CVE-2025-3608: firefox - A race condition existed in nsHttpTransaction that could have been exploited to ... A race condition existed in nsHttpTransaction that could have been exploited to cause memory corruption, potentially leading to an exploitable condition. This vulnerability affects Firefox < 137.0.2. Scope: local sid: resolved (fixed in 137.0.2-1)

CVE-2025-4087 [MEDIUM] CVE-2025-4087: firefox - A vulnerability was identified in Thunderbird where XPath parsing could trigger ... A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Thunderbird < 138, and Thunderbird < 128.10. Scope: local sid: resolved

CVE-2025-5266 [MEDIUM] CVE-2025-5266: firefox - Script elements loading cross-origin resources generated load and error events w... Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability affects Firefox < 139, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11. Scope: local sid: resolved (fixed in 139.0-1)

CVE-2025-11711 [MEDIUM] CVE-2025-11711: firefox - There was a way to change the value of JavaScript Object properties that were su... There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability affects Firefox < 144, Firefox ESR < 115.29, Firefox ESR < 140.4, Thunderbird < 144, and Thunderbird < 140.4. Scope: local sid: resolved (fixed in 144.0-1)

CVE-2025-6425 [MEDIUM] CVE-2025-6425: firefox - An attacker who enumerated resources from the WebCompat extension could have obt... An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. This vulnerability affects Firefox < 140, Firefox ESR < 115.25, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12. Scope: local sid: r

CVE-2025-10531 [MEDIUM] CVE-2025-10531: firefox - Mitigation bypass in the Web Compatibility: Tooling component. This vulnerabilit... Mitigation bypass in the Web Compatibility: Tooling component. This vulnerability affects Firefox < 143 and Thunderbird < 143. Scope: local sid: resolved (fixed in 143.0-1)

CVE-2025-0243 [MEDIUM] CVE-2025-0243: firefox - Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, a... Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6. S

CVE-2025-5264 [MEDIUM] CVE-2025-5264: firefox - Due to insufficient escaping of the newline character in the “Copy as cURL” feat... Due to insufficient escaping of the newline character 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 vulnerability affects Firefox < 139, Firefox ESR < 115.24, Firefox ESR < 128.11, Thunderbird < 139, and Thunderbird < 128.11. Scope: local sid: resolved (fi

CVE-2025-9181 [MEDIUM] CVE-2025-9181: firefox - Uninitialized memory in the JavaScript Engine component. This vulnerability affe... Uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 142, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2. Scope: local sid: resolved (fixed in 142.0-1)

CVE-2025-5283 [MEDIUM] CVE-2025-5283: chromium - Use after free in libvpx in Google Chrome prior to 137.0.7151.55 allowed a remot... Use after free in libvpx in Google Chrome prior to 137.0.7151.55 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium) Scope: local bookworm: resolved (fixed in 137.0.7151.55-3~deb12u1) bullseye: open forky: resolved (fixed in 137.0.7151.55-1) sid: resolved (fixed in 137.0.7151.55-1) trixie: r

CVE-2025-6430 [MEDIUM] CVE-2025-6430: firefox - When a file download is specified via the `Content-Disposition` header, that dir... When a file download is specified via the `Content-Disposition` header, that directive would be ignored if the file was included via a ` ` or ` ` tag, potentially making a website vulnerable to a cross-site scripting attack. This vulnerability affects Firefox < 140, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12. Scope: local sid: resolved (fixed

CVE-2025-8027 [MEDIUM] CVE-2025-8027: firefox - On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value ... On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1. Scope: local sid: resolved (fixed in 141.0-1)

CVE-2025-1935 [MEDIUM] CVE-2025-1935: firefox - A web page could trick a user into setting that site as the default handler for ... A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8. Scope: local sid: resolved (fixed in 136.0-1)