CVE-2026-8889
CVE-2026-8889 is a high-severity vulnerability in Securly with a CVSS 3.x base score of 7.5. 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-407.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 0% (16th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-34167
- Weakness: CWE-407
- Affected product: Securly
- Published:
- Last modified:
Description
Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes).
Frequently asked questions
- What is CVE-2026-8889?
- Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes).
- How severe is CVE-2026-8889?
- CVE-2026-8889 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-8889 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-8889?
- CVE-2026-8889 affects Securly. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-8889?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-8889 have an EU (EUVD) identifier?
- Yes. CVE-2026-8889 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34167.
- When was CVE-2026-8889 published?
- CVE-2026-8889 was published on 2026-06-03 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:securly:securly:3.0.7:*:*:*:*:chrome:*:*
More vulnerabilities in Securly
- CVE-2026-8888 — High (CVSS 7.5): Version 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and compiles server-provided patterns as…
- CVE-2026-8881 — High (CVSS 7.5): Version 3.0.7 of the Securly Chrome Extension uses EVP_BytesToKey key derivation with MD5 and a single iteration for…
- CVE-2026-8879 — High (CVSS 7.5): Version 3.0.7 of the Securly Chrome Extension dynamically registers content13.min.js as a content script via…
- CVE-2026-8878 — High (CVSS 7.5): Version 3.0.7 of the Securly Chrome Extension exposes multiple publicly accessible endpoints that allow unauthenticated…
- CVE-2026-8876 — High (CVSS 7.3): Version 3.0.7 of the Securly Chrome Extension contains hardcoded, plaintext AES passphrases in securly.min.js. These…
- CVE-2026-8874 — High (CVSS 7.1): Version 3.0.7 of the Securly Chrome Extension downloads JSON files containing crisis alert keywords and filtering rules…
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