CVE-2026-97045 Check all ancestor namespace transitions when rendering raw text in html in golang.org/x/net
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-97045?
CVE-2026-97045 is a vulnerability in golang.org/x/net/html, published on 27 Oct 2026.
Official description
In childTextNodesAreLiteral, walking up the tree previously stopped at the nearest foreign ancestor once an HTML integration point was found. However, that integration point may itself be a descendant of an element that was foster-parented into a foreign namespace (such as <mglyph> or <malignmark> fostered under <mtext>), causing a parser to resolve the subtree in a different foreign namespace upon re-parsing the rendered output. Continue walking the full ancestor chain and verify that every transition from a non-empty namespace occurs at an HTML integration point before emitting literal text.
Which versions are affected by CVE-2026-97045?
1 open source package ship an affected version, including golang.org/x/net.
| Package | Affected | Fixed in |
|---|---|---|
golang.org/x/net Go | All versions | 0.62.0 |
How do I fix CVE-2026-97045?
Upgrade golang.org/x/net to 0.62.0 or later.
Is CVE-2026-97045 being exploited?
There is no known exploitation of CVE-2026-97045 in the wild and no public exploit code.
Sources
Also known as CLEANSTART-2026-KJ55462, DEBIAN-CVE-2026-97045, ECHO-5fd1-50a5-cc44, GHSA-vwcj-r8v9-p53f, GO-2026-6866, MINI-224v-gr76-qv78 and 113 more.