CVE-2026-8889
Description
Securly Chrome Extension 3.0.7 uses deprecated SHA-1 hashing, exposing sensitive filtering rules and potentially allowing content blocking rule modification.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Securly Chrome Extension 3.0.7 uses deprecated SHA-1 hashing, exposing sensitive filtering rules and potentially allowing content blocking rule modification.
Vulnerability
Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching and CIPA blocklist matching. This hashing method is insecure and can be easily reversed, potentially exposing sensitive filtering rules [1].
Exploitation
An attacker could exploit this weakness by reversing the SHA-1 hashes, which are inadequately obfuscated using a simple Caesar cipher. This allows access to protected data and potentially enables the manipulation of downloaded configuration files [1].
Impact
Successful exploitation could allow an attacker to steal configuration information, induce a Denial of Service (DoS), or modify content blocking rules for student users. The scope of the compromise could affect internet safety policies and student online access management [1].
Mitigation
Not yet disclosed in the available references. The affected version is 3.0.7 [1].
AI Insight generated on Jun 3, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1- Range: 3.0.7
Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
1News mentions
0No linked articles in our index yet.