CVE-2019-11593
CVE-2019-11593 is a high-severity vulnerability in Adblockplus Adblock Plus with a CVSS 3.x base score of 8.1. 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-94.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- CVSS v2: 6.8
- EPSS exploit prediction: 2% (83rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-94
- Affected product: Adblockplus Adblock Plus
- Published:
- Last modified:
Description
In Adblock Plus before 3.5.2, the $rewrite filter option allows filter-list maintainers to run arbitrary code in a client-side session when a web service loads a script for execution using XMLHttpRequest or Fetch, and the script origin has an open redirect.
Frequently asked questions
- What is CVE-2019-11593?
- In Adblock Plus before 3.5.2, the $rewrite filter option allows filter-list maintainers to run arbitrary code in a client-side session when a web service loads a script for execution using XMLHttpRequest or Fetch, and the script origin has an open redirect.
- How severe is CVE-2019-11593?
- CVE-2019-11593 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2019-11593 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-11593?
- CVE-2019-11593 affects Adblockplus Adblock Plus. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-11593?
- 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.
- When was CVE-2019-11593 published?
- CVE-2019-11593 was published on 2019-04-29 and last updated on 2026-06-17.
References
- https://adblockplus.org/releases/adblock-plus-352-for-chrome-firefox-and-opera-released
- https://armin.dev/blog/2019/04/adblock-plus-code-injection/
- https://gitlab.com/eyeo/adblockplus/adblockpluschrome/issues/1
- https://gitlab.com/eyeo/adblockplus/adblockpluscore/issues/4
- https://news.ycombinator.com/item?id=19666504
Affected products (1)
- cpe:2.3:a:adblockplus:adblock_plus:*:*:*:*:*:chrome:*:*
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