Vulnerability in Securly
CVE-2026-8878
Version 3.0.7 of the Securly Chrome Extension exposes multiple publicly accessible endpoints that allow unauthenticated access to sensitive data. The exposed information consists of SHA-1 hashes that are inadequately obfuscated using a simple Caesar cipher, which can be easily reversed to recover the original hash values and access the protected data.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (16.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Securly — versions 3.0.7
- Securly Chrome Extension — versions 0
Weakness classification (CWE)
References
- kb.cert.org/vuls/id/595768 (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-8878?
- CVE-2026-8878 is a high-severity vulnerability in Securly, classified under Inadequate Encryption Strength. CVSS score: 7.5/10. Published 2026-06-03.
- How severe is CVE-2026-8878?
- High severity. CVSS v3 base score is 7.5 out of 10.