PT-2021-20170 · Plone · Plone

Emir Cüneyt Akkutlu + 1 · Published 2021-05-21 · Updated 2021-06-08 · CVE-2021-33512

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Plone versions through 5.2.4

Description The issue allows stored XSS attacks by uploading an SVG or HTML document, which can be exploited by a Contributor.

Recommendations For versions through 5.2.4, update to a version that contains a fix for this issue to prevent stored XSS attacks. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-33512

GHSA-HM2H-F456-6J88

PYSEC-2021-84

Affected Products

Plone

References · 11

• https://osv.dev/vulnerability/GHSA-hm2h-f456-6j88 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-33512 · Security Note
• https://osv.dev/vulnerability/PYSEC-2021-84 · Vendor Advisory
• https://plone.org/security/hotfix/20210518/stored-xss-from-file-upload-svg-html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-33512 · Vendor Advisory
• https://github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2021-84.yaml · Note
• https://github.com/advisories/GHSA-hm2h-f456-6j88 · Note
• https://t.me/cvenotify/14857 · Telegram Post
• https://t.me/cvenotify/14849 · Telegram Post
• https://t.me/cvenotify/14891 · Telegram Post
• http://openwall.com/lists/oss-security/2021/05/22/1 · Note