CVE-2022-31017

lowpriority · track · 10EPSS 0.006 · 48 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.58% (48th) EPSS
CVSS 2.1 · low
Is it mine?
2 products
Check your exposure
Who says so?
3 sources
cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Zulip is an open-source team collaboration tool. Versions 2.1.0 through and including 5.2 are vulnerable to a logic error. A stream configured as private with protected history, where new subscribers should not be allowed to see messages sent before they were subscribed, when edited causes the server to incorrectly send an API event that includes the edited message to all of the stream’s current subscribers. This API event is ignored by official clients, but can be observed by using a modified client or the browser’s developer tools. This bug will be fixed in Zulip Server 5.3. There are no known workarounds.

01

cvss

Technical severity, 0–10. One row per scoring source.

2.6
010

base score 0–10 · higher = more severe · hover a vector to decode

v2.02.1lowAV:N/AC:H/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.9
v3.12.6lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 1.2 · impact 1.4
v3.12lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:Nsecondary · ENISA EU
v3.12lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:Nsecondary · security-advisories@github.comexploitability 0.5 · impact 1.4
v3.12.4lowCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-571USCWE-670US
04

affected products (2)

Products and version ranges known to be affected.

05

also known as (2)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

cnnvdenisa_euvdnvdNVDCVE.orgMITRE
published 2022-06-25modified 2026-06-17
07

references (4)

External citations — patches, advisories, analysis.

scry

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