CVE-2021-23358

mediumpriority · track · 40EPSS 0.042 · 91 %ileexploit · PoCDEEUNLRUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

4.20% (91st) EPSS

CVSS 6.5 · medium

Is it mine?

38 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

The package underscore from 1.13.0-0 and before 1.13.0-2, from 1.3.2 and before 1.12.1 are vulnerable to Arbitrary Code Injection via the template function, particularly when a variable property is passed as an argument as it is not sanitized.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–critical · 3.3–9.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9

v3.17.2highAV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.13.3lowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:Csecondary · ENISA EU

v3.13.3lowCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:Nsecondary · report@snyk.ioexploitability 0.7 · impact 2.5

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.16.8mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL

ssvc

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

Exploitation: poc · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-94USCWE-94USCWE-94US

exploits (2)

Public proof-of-concept and weaponised exploit code.

EkamSinghWalia/Detection-script-for-cve-2021-23358Detection script for cve-2021-23358PoC · poc_in_github
MehdiBoukhobza/SandBox_CVE-2021-23358MehdiBoukhobza/SandBox_CVE-2021-23358PoC · poc_in_github

affected products (38)

Products and version ranges known to be affected.

Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Atlassian Bamboo≤ LTS <10.2.21cert_bundDE
Atlassian Bamboo≤ LTS <12.1.9cert_bundDE
Atlassian Bitbucket≤ LTS <10.3.2cert_bundDE
Atlassian Bitbucket≤ LTS <9.4.22cert_bundDE
Atlassian Confluence≤ LTS <10.2.14cert_bundDE
Atlassian Confluence≤ LTS <9.2.22cert_bundDE
Atlassian Crucible< 4.9.12cert_bundDE
Atlassian Fisheye< 4.9.12cert_bundDE
Atlassian Jira≤ LTS <11.3.8cert_bundDE
Atlassian Jira≤ LTS <10.3.23cert_bundDE
Dell Secure Connect Gateway< 5.36.00.16cert_bundDE
n/a underscore1.13.0-0 → unspecifiedenisa_euvdEU
n/a underscore1.3.2 → unspecifiedenisa_euvdEU
n/a underscoreunspecified → 1.12.1enisa_euvdEU
n/a underscoreunspecified → 1.13.0-2enisa_euvdEU
Jeremy Ashkenas Underscore1.13.0-0 → 1.13.0-2fstec_bduRU
Jeremy Ashkenas Underscore1.3.2 → 1.12.1fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Special Edition≤ 1.7fstec_bduRU

showing 20 of 38

advisories (6)

Vendor and ecosystem advisories describing this.

NCSC-2024-0413Kwetsbaarheden verholpen in Oracle CommerceNL2024-10-17csaf · ncsc_nlNL
Oracle heeft kwetsbaarheden verholpen in Commerce.
WID-SEC-W-2022-1354Red Hat Enterprise Linux: Mehrere SchwachstellenDeutsch2021-05-04csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um beliebigen Programmcode auszuführen, Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.
WID-SEC-W-2023-0136Oracle Construction and Engineering: Mehrere SchwachstellenDeutsch2023-01-17csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Construction and Engineering ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
WID-SEC-W-2024-3197Oracle Commerce: Mehrere SchwachstellenDeutsch2024-10-15csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Oracle Commerce ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
WID-SEC-W-2026-2460Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira und Jira Service Management: Mehrere SchwachstellenDeutsch2026-07-21csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira und Jira Service Management ausnutzen, um beliebigen Code auszuführen, erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand auszulösen.
GHSA-cf4h-3jhx-xvhqArbitrary Code Execution in underscore2021-05-06ghsa · osvUS
The package `underscore` from 1.13.0-0 and before 1.13.0-2, from 1.3.2 and before 1.12.1 are vulnerable to Arbitrary Code Execution via the template function, particularly when a variable property is passed as an argument as it is not sanitized.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl osv NVD CVE.org MITRE

published 2021-03-29modified 2026-06-17

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+10438 more

references (86)

External citations — patches, advisories, analysis.

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