Medium severity6.5NVD Advisory· Published Sep 18, 2019· Updated Jun 17, 2026
CVE-2019-16215
CVE-2019-16215
Description
The Markdown parser in Zulip server before 2.0.5 used a regular expression vulnerable to exponential backtracking. A user who is logged into the server could send a crafted message causing the server to spend an effectively arbitrary amount of CPU time and stall the processing of future messages.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*range: <2.0.5
- (no CPE)range: <2.0.5
- Zulip/Zulip serverdescription
Patches
Vulnerability mechanics
References
2- github.com/zulip/zulip/commit/5797f013b3be450c146a4141514bda525f2f1b51nvdPatchThird Party Advisory
- blog.zulip.org/2019/09/11/zulip-server-2-0-5-security-release/nvdVendor Advisory
News mentions
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