Which products and versions are affected by CVE-2020-35774?

Affected: Twitter-Server; com.twitter:twitter-server_2.12 (maven). The full list is in the CVE brief.

Is CVE-2020-35774 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2020-35774 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2020-35774?

No public exploit code is known.

Is there a fix for CVE-2020-35774?

Fixed versions are available, including com.twitter:twitter-server_2.12 20.12.0, Twitter-Server 20.12.0.

How urgently should CVE-2020-35774 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Request A Demo

Vulnerability Intelligence

CVE-2020-35774

Medium

TwitterServer Cross-site Scripting via /histograms endpoint

Published Feb 9, 2022 · Updated Jul 8, 2026 · Also known as GHSA-3mqv-8gxg-pfm4

Key Facts

Patch immediately

CVE-2020-35774 is a medium-severity vulnerability (CVSS 5.4 v3.1) affecting Twitter-Server, com.twitter:twitter-server_2.12 (maven).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 86% probability of exploitation in the next 30 days.
Fixed versions are available, including com.twitter:twitter-server_2.12 20.12.0, Twitter-Server 20.12.0.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

5.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS (30-day exploit likelihood)

86%

Higher than 99.7% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2020-35774 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

server/handler/HistogramQueryHandler.scala in Twitter TwitterServer (aka twitter-server) before 20.12.0, in some configurations, allows XSS via the /histograms endpoint.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Twitter-ServerTwitter	See advisory	20.12.0
com.twitter:twitter-server_2.12maven	See advisory	20.12.0

Patched Releases

com.twitter:twitter-server_2.12

20.12.0

Twitter-Server

20.12.0

Timeline

Publicly disclosed
Feb 9, 2022
Last updated
Jul 8, 2026

Weakness Type

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

1 more references in the full CVE brief

FAQ

Common Questions.

server/handler/HistogramQueryHandler.scala in Twitter TwitterServer (aka twitter-server) before 20.12.0, in some configurations, allows XSS via the /histograms endpoint.
Affected: Twitter-Server; com.twitter:twitter-server_2.12 (maven). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including com.twitter:twitter-server_2.12 20.12.0, Twitter-Server 20.12.0.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2020-35774 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.