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High severity7.5NVD Advisory· Published Jul 18, 2021· Updated Jun 17, 2026

CVE-2021-36773

CVE-2021-36773

Description

uBlock Origin before 1.36.2 and nMatrix before 4.4.9 support an arbitrary depth of parameter nesting for strict blocking, which allows crafted web sites to cause a denial of service (unbounded recursion that can trigger memory consumption and a loss of all blocking functionality).

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

7
  • Sciruby/Nmatrix
    cpe:2.3:a:sciruby:nmatrix:*:*:*:*:*:*:*:*
    Range: <4.4.9
  • uBlockOrigin/Ublock Origin2 versions
    cpe:2.3:a:ublockorigin:ublock_origin:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:ublockorigin:ublock_origin:*:*:*:*:*:*:*:*range: <1.36.2
    • (no CPE)range: <1.36.2
  • Umatrix Project/Umatrix
    cpe:2.3:a:umatrix_project:umatrix:*:*:*:*:*:*:*:*
    Range: <1.4.2
  • Debian/linux
    cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • uBlock Origin/uBlock Origindescription
  • nMatrix/nMatrixllm-fuzzy
    Range: <4.4.9

Patches

Vulnerability mechanics

References

3

News mentions

0

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