Some HTML elements, such as <title> and <textarea>, can contain literal angle brackets without treating them as markup.

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• mozilla firefoxbefore 60.9
• mozilla firefoxbefore 69.0
• mozilla firefox68.0 and later · before 68.1
• mozilla thunderbirdbefore 60.9
• mozilla thunderbird68.0 and later · before 68.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.

• Mozilla Firefox

  • unspecified and later · before 69affected

• Mozilla Firefox ESR

  • unspecified and later · before 60.9affected
  • unspecified and later · before 68.1affected

• Mozilla Thunderbird

  • unspecified and later · before 68.1affected
  • unspecified and later · before 60.9affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV
  94Now
• CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV
  87Now
• CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV
  86Now

Published before and after this one in the same product

• ← EarlierCVE-2019-11742Sep 27, 2019 · A same-origin policy violation occurs allowing the theft of cross-origin images through a combination of SVG filters and a <canvas> el
  27Monitor
• ← EarlierCVE-2019-11743Sep 27, 2019 · Navigation events were not fully adhering to the W3C's "Navigation-Timing Level 2" draft specification in some instances for the unload even
  15Monitor
• Later →CVE-2019-11746Sep 27, 2019 · A use-after-free vulnerability can occur while manipulating video elements if the body is freed while still in use.
  36Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1commentEl.innerHTML = comment.body;

1commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.