CVE-2023-46303: calibre-ebook calibre Server-Side Request Forgery (SSRF)
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2023-46303DEBIAN-CVE-2023-46303
Published 22-10-2023Last modified 04-11-2025
Vulnerability summary
CVE-2023-46303 is a high (CVSS 7.5) Server-Side Request Forgery (SSRF) vulnerability in calibre-ebook calibre. EPSS estimates a 1.34% chance of exploitation in the next 30 days, higher than 70.9% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.34%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 2Timeline
- 22-10-2023PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
Description
link_to_local_path in ebooks/conversion/plugins/html_input.py in calibre before 6.19.0 can, by default, add resources outside of the document root.
CVSS metrics
3 scores · 3 sources · 1 versionHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
1.34%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
-0.01 pp
From 1.35% on 20-09-2026
20-09-202620-10-2026
EPSS score1.34%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundSsrf Via Img
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Calibre-ebook1 product
- calibre< 6.19.0
Debian1 product
- calibre< 6.13.0+repack-2+deb12u3 | < 6.19.1-1
Ubuntu1 product
- calibreAll versions (No fix recorded)
3 vendors · 3 products
