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Vulnerability record · CVE-2026-8878 · published 3 June 2026

CVE-2026-8878: Securly inadequate encryption strength vulnerability

Securly · Securly

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.

7.5 CVSS 3.1 High EPSS 0.26% · top 83.9% CWE-326 · Inadequate encryption strength
7.5CVSS 3.1 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
22 Jul 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://kb.cert.org/vuls/id/595768 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2026-8879Securly inclusion from untrusted sphere vulnerabilityVersion 3.0.7 of the Securly Chrome Extension dynamically registers content13.min.js as a content script via chrome.scripting.registerContentScripts(…EPSS 0.51%7.5CVE-2026-8881Securly vulnerabilityVersion 3.0.7 of the Securly Chrome Extension uses EVP_BytesToKey key derivation with MD5 and a single iteration for AES encryption. MD5 has been bro…EPSS 0.20%7.5CVE-2026-8888Securly expression language injection vulnerabilityVersion 3.0.7 of the Securly Chrome Extension downloads config.json over HTTP and compiles server-provided patterns as JavaScript regular expressions…EPSS 0.60%7.5CVE-2026-8889Securly vulnerabilityVersion 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…EPSS 0.32%7.3CVE-2026-8876Securly hard-coded credentials vulnerabilityVersion 3.0.7 of the Securly Chrome Extension contains hardcoded, plaintext AES passphrases in securly.min.js. These keys decrypt crisis alert keywor…EPSS 0.30%7.1CVE-2026-8874Securly cleartext transmission vulnerabilityVersion 3.0.7 of the Securly Chrome Extension downloads JSON files containing crisis alert keywords and filtering rules over unencrypted HTTP via the…EPSS 0.17%9.8CVE-2017-11317Telerik UI for ASP.NET AJAX weak encryption enables arbitrary file uploadTelerik.Web.UI in Progress Telerik UI for ASP.NET AJAX before R1 2017 and R2 before R2 2017 SP2 uses weak RadAsyncUpload encryption. Because the encr…KEVEPSS 84%analysed9.8CVE-2017-1000486PrimeFaces weak encryption flaw leads to remote code executionPrimeFaces 5.x uses inadequate encryption strength (CWE-326), which allows an unauthenticated remote attacker to reach code execution. The flaw is ra…KEVEPSS 94%analysed

Source: NIST National Vulnerability Database (record CVE-2026-8878), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.