{"cve":"CVE-2023-42458","nvd":{"published":"2023-09-21T17:15:22.483","modified":"2026-06-17T06:23:52.493","status":"Modified","description":"Zope is an open-source web application server. Prior to versions 4.8.10 and 5.8.5, there is a stored cross site scripting vulnerability for SVG images. Note that an image tag with an SVG image as source is never vulnerable, even when the SVG image contains malicious code. To exploit the vulnerability, an attacker would first need to upload an image, and then trick a user into following a specially crafted link. Patches are available in Zope 4.8.10 and 5.8.5. As a workaround, make sure the \"Add Documents, Images, and Files\" permission is only assigned to trusted roles. By default, only the Manager has this permission.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79","CWE-80"],"references":["http://www.openwall.com/lists/oss-security/2023/09/22/2","https://github.com/zopefoundation/Zope/commit/26a55dbc301db417f47cafda6fe0f983b5690088","https://github.com/zopefoundation/Zope/commit/603b0a12881c90a072a7a65e32d47ed898ce37cb","https://github.com/zopefoundation/Zope/security/advisories/GHSA-wm8q-9975-xh5v","http://www.openwall.com/lists/oss-security/2023/09/22/2"],"products":["zope:zope"],"source":"nvd","synced_at":"2026-10-19T21:39:24.235896374+00:00"},"epss":{"cve":"CVE-2023-42458","score":0.00714,"percentile":0.5374,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wm8q-9975-xh5v","url":"https://osv.dev/vulnerability/GHSA-wm8q-9975-xh5v","summary":"Zope vulnerable to Stored Cross Site Scripting with SVG images","modified":"2026-09-10T03:50:03.278125030Z","packages":[{"ecosystem":"PyPI","name":"zope","purl":"pkg:pypi/zope","ranges":["<4.8.10"],"fixed":["4.8.10"]},{"ecosystem":"PyPI","name":"zope","purl":"pkg:pypi/zope","ranges":[">=5.8.0 <5.8.5"],"fixed":["5.8.5"]}]},{"id":"PYSEC-2026-2077","url":"https://osv.dev/vulnerability/PYSEC-2026-2077","summary":"Zope vulnerable to Stored Cross Site Scripting with SVG images","modified":"2026-07-07T17:48:17.121157164Z","packages":[{"ecosystem":"PyPI","name":"zope","purl":"pkg:pypi/zope","ranges":["<4.8.10",">=5.8.0 <5.8.5"],"fixed":["4.8.10","5.8.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}