OPENSUSE-SU-2026:21231-1
Vulnerability from csaf_opensuse - Published: 2026-07-03 12:11 - Updated: 2026-07-03 12:11Summary
Security update for python-pydata-sphinx-theme
Severity
Important
Notes
Title of the patch: Security update for python-pydata-sphinx-theme
Description of the patch: This update for python-pydata-sphinx-theme fixes the following issues:
Changes in python-pydata-sphinx-theme:
- CVE-2026-13676: fast-uri: failure to canonicalize Unicode/IDN
hostnames for HTTP-family URLs allows for bypass (bsc#1269597)
* revendor the vendored tarball with updated versions
Patchnames: openSUSE-Leap-16.0-packagehub-388
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
7.2 (High)
Affected products
Recommended
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: openSUSE Leap 16.0:python313-pydata-sphinx-theme-0.16.1-bp160.3.1.noarch | — |
Vendor Fix
|
Threats
Impact
important
References
6 references
{
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{
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"text": "This update for python-pydata-sphinx-theme fixes the following issues:\n\nChanges in python-pydata-sphinx-theme:\n\n- CVE-2026-13676: fast-uri: failure to canonicalize Unicode/IDN\n hostnames for HTTP-family URLs allows for bypass (bsc#1269597)\n * revendor the vendored tarball with updated versions\n",
"title": "Description of the patch"
},
{
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"title": "Patchnames"
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{
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{
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"url": "https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21231-1.json"
},
{
"category": "self",
"summary": "SUSE Bug 1269597",
"url": "https://bugzilla.suse.com/1269597"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-13676 page",
"url": "https://www.suse.com/security/cve/CVE-2026-13676/"
}
],
"title": "Security update for python-pydata-sphinx-theme",
"tracking": {
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{
"date": "2026-07-03T12:11:06Z",
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"product": {
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{
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},
"vulnerabilities": [
{
"cve": "CVE-2026-13676",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2026-13676"
}
],
"notes": [
{
"category": "general",
"text": "fast-uri versions 2.3.1 through 3.1.2 and 4.0.0 fail to canonicalize Unicode (IDN) hostnames for HTTP-family URLs. The IDN conversion path calls a helper that does not exist on the global URL constructor, silently leaving the host in its original Unicode form while normalize() and equal() still return values that differ from a WHATWG-compatible URL parser. Applications that use fast-uri to enforce host-based policy (denylists, loopback filtering, redirect validation, outbound proxy routing) before passing the same URL to Node\u0027s URL or fetch can be bypassed when the two implementations resolve the same input to different hosts. Patches: upgrade to fast-uri 3.1.3 for the 3.x line or 4.0.1 for the 4.x line. Workarounds: enforce host policy using the same URL parser used for the actual request, or reject non-ASCII hosts before policy checks.",
"title": "CVE description"
}
],
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],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
"openSUSE Leap 16.0:python313-pydata-sphinx-theme-0.16.1-bp160.3.1.noarch"
]
}
],
"scores": [
{
"cvss_v3": {
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
},
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}
],
"threats": [
{
"category": "impact",
"date": "2026-07-03T12:11:06Z",
"details": "important"
}
],
"title": "CVE-2026-13676"
}
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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