CVE-2023-42458 json
Zope vulnerable to Stored Cross Site Scripting with SVG images
published 2023-09-21 3 y ago modified 2026-09-10 1 mo ago also GHSA-wm8q-9975-xh5v , PYSEC-2026-2077 , EUVD-2023-2609
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi zope 4.8.10, 5.8.5
- zope zope 4.8.10, 5.8.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- openwall.com http://www.openwall.com/lists/oss-security/2023/09/22/2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | zope | <4.8.10 >=5.8.0, <5.8.5 |
4.8.10 5.8.5 |
Affected products
- zopefoundation Zope
Classification
References
-
github.com
/zopefoundation/Zope/commit/26a55dbc301db417f47cafda6fe0f983b5690088
web, patch
-
github.com
/zopefoundation/Zope/commit/603b0a12881c90a072a7a65e32d47ed898ce37cb
web, patch
-
openwall.com
/lists/oss-security/2023/09/22/2
web, exploit, third-party-advisory
-
github.com
/zopefoundation/Zope/security/advisories/GHSA-wm8q-9975-xh5v
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-42458
advisory
-
github.com
/zopefoundation/Zope
package
-
pypi.org
/project/zope
package
-
github.com
/advisories/GHSA-wm8q-9975-xh5v
advisory
Sources
- CVE List CVE-2023-42458
- GitHub Advisory GHSA-wm8q-9975-xh5v
- NVD CVE-2023-42458
- OSV PYSEC-2026-2077
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