CVE-2026-78661: Denial of Service via crafted HTML input
Not in the CISA KEV catalog. High advisory severity (CVSS 7.5, Red Hat).
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
CVE-2026-78661 key facts
- CISA KEV
- Not listed (catalog checked )
- Highest advisory severity
- High
- CVSS base score
- 7.5 (Red Hat)
- Weakness
- CWE-1046
- VulniPulse record
- Published · Updated
Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-78661; bulletin-wide values are not repeated here.
Is CVE-2026-78661 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-78661 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-78661?
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. (Red Hat)
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Vendor advisory comparison
NetApp
1 advisory- Advisory severityHigh7.5
High [CVE-2026-78661 +1] October 2026 Golang.Org/X/Net 0.61.0 Vulnerabilities in NetApp Products
NTAP-20261106-0007Source published Source updated
This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Golang. Org/X/Net versions through 0.61.0 are susceptible to vulnerabilities in addText, fosterParent and childTextNodesAreLiteral. Successful exploitation of these vulnerabilities could lead to disclosure of sensitive information or addition or modification of data. NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- 0.61.0
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
Red Hat
1 advisory- Advisory severityHigh7.5
High [CVE-2026-78661] Denial of Service via crafted HTML input
CVE-2026-78661Source published Source updated
Denial of Service via crafted HTML input. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1046. Affected product named by the advisory: Red Hat OpenShift AI (RHOAI).
- Related products — impact not confirmed
- Red Hat OpenShift AI (RHOAI)
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
More NetApp advisories
- CVE-2026-114583Nov 6, 2026CPython Vulnerability in NetApp Products
- CVE-2026-72493Nov 6, 2026Linux Kernel Vulnerability in NetApp Products
- CVE-2026-101308Nov 6, 2026FreeBSD Vulnerability in NetApp Products
- CVE-2026-111943Nov 6, 2026Golang Vulnerability in NetApp Products
- CVE-2026-101307Nov 6, 2026FreeBSD Vulnerability in NetApp Products
- CVE-2026-100075Nov 6, 2026Linux Kernel Vulnerability in NetApp Products
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