How severe is CVE-2023-26364?

CVE-2023-26364 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-26364 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26364?

CVE-2023-26364 affects Adobe Css-tools. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26364?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-26364 published?

CVE-2023-26364 was published on 2023-11-17 and last updated on 2026-06-17.

CVE-2023-26364

CVE-2023-26364 is a medium-severity vulnerability in Adobe Css-tools with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Adobe Css-tools
Published: 2023-11-17
Last modified: 2026-06-17

Description

@adobe/css-tools version 4.3.0 and earlier are affected by an Improper Input Validation vulnerability that could result in a minor denial of service while attempting to parse CSS. Exploitation of this issue does not require user interaction or privileges.

Frequently asked questions

What is CVE-2023-26364?: @adobe/css-tools version 4.3.0 and earlier are affected by an Improper Input Validation vulnerability that could result in a minor denial of service while attempting to parse CSS. Exploitation of this issue does not require user interaction or privileges.
How severe is CVE-2023-26364?: CVE-2023-26364 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-26364 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26364?: CVE-2023-26364 affects Adobe Css-tools. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26364?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-26364 published?: CVE-2023-26364 was published on 2023-11-17 and last updated on 2026-06-17.

References

https://github.com/adobe/css-tools/security/advisories/GHSA-hpx4-r86g-5jrg

Affected products (1)

cpe:2.3:a:adobe:css-tools:*:*:*:*:*:node.js:*:*

More vulnerabilities in Adobe Css-tools

CVE-2023-48631 — Medium (CVSS 5.3): @adobe/css-tools versions 4.3.1 and earlier are affected by an Improper Input Validation vulnerability that could…

All CVEs affecting Adobe Css-tools →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →