CVE-2024-36612Network attack vector

Web-client interruption via repeated hidden-popover dismissal

Published Nov 29, 2024 · Updated Dec 2, 2024

Memory leak in Zulip 8.0 through 8.3 allows attackers to exhaust a web client's memory through repeated popover interactions. Multiple popover event handlers call Tippy's instance.hide() after the same popover has already been hidden instead of checking its visibility before a second dismissal. Triggering occurs through the web interface; published evidence supports browser-session interruption, not server shutdown, data access, or data modification.

CVSS severity7.5
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in Zulip 8.0 through 8.3 allows attackers to exhaust a web client's memory through repeated popover interactions. Multiple popover event handlers call Tippy's instance.hide() after the same popover has already been hidden instead of checking its visibility before a second dismissal. Triggering occurs through the web interface; published evidence supports browser-session interruption, not server shutdown, data access, or data modification.

The record

CVE
CVE-2024-36612
Published
Nov 29, 2024
Updated
Dec 2, 2024
Vendor
Zulip
Product
Zulip
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.0 <=8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zulip · Zulipversion=8.0 <=8.3

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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