XSS in Apple Safari
CVE-2020-15138
Prism is vulnerable to Cross-Site Scripting. The easing preview of the Previewers plugin has an XSS vulnerability that allows attackers to execute arbitrary code in Safari and Internet Explorer. This impacts all Safari and Internet Explorer users of Prism >=v1.1.0 that use the _Previewers_ plugin (>=v1.10.0) or the _Previewer: Easing_ plugin (v1.1.0 to v1.9.0). This problem is fixed in version 1.21.0. To workaround the issue without upgrading, disable the easing preview on all impacted code blocks. You need Prism v1.10.0 or newer to apply this workaround.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.020 (81.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Apple Safari
- Microsoft Internet Explorer
- Prismjs Previewers
- Prismjs Prism — versions >= 1.1.0, < 1.21.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/PrismJS/prism/security/advisories/GHSA-wvhm-4hhf-97x9 (Third Party Advisory)
- prismjs.com/plugins/previewers/ (Vendor Advisory)
- github.com/PrismJS/prism/pull/2506/commits/7bd7de05edf71112a3a77f87901a2409c9c5… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15138?
- CVE-2020-15138 is a high-severity vulnerability in Apple Safari, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2020-08-07.
- How severe is CVE-2020-15138?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2020-15138 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.