CVE-2019-18345

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity93% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
82%
KEV
Not listed

Published

December 12, 2019

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Aug 1, 2026
Patch available.
generic

ChangeLog · master · DAViCal Project / DAViCal · GitLab

https://gitlab.com/davical-project/davical/blob/master/ChangeLog
generic

[SECURITY] [DSA 4582-1] davical security update

https://www.debian.org/security/2019/dsa-4582
generic

DAViCal - DAViCal Home

https://www.davical.org/
generic

Davical

https://wiki.davical.org/index.php/Main_Page
generic

Bugtraq: [SECURITY] [DSA 4582-1] davical security update

https://seclists.org/bugtraq/2019/Dec/30
generic Patch Available

[SECURITY] [DLA 2034-1] davical security update

https://lists.debian.org/debian-lts-announce/2019/12/msg00016.html
generic

CVE-2019 – 18345 Reflected Cross-Site Scripting (XSS) vulnerability in DAViCal CalDAV Server

https://hackdefense.com/publications/cve-2019-18345-davical-caldav-server-vulnerability/

Affected Packages

(7 across 7 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
davical1.1.8-1, 1.1.8-1+deb10u1~bpo9+11.1.8-1+deb10u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
davical—1.1.9.2-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
davical—1.1.9.2-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
davical—1.1.9.2-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
davical—1.1.9.2-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
davical1.1.3.1-11.1.3.1-1+deb8u1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
davical1.1.5-11.1.5-1+deb9u1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 120 total refreshes for this CVE.

  1. 2026-08-21 23:45 UTCEPSS rescore
  2. 2026-08-21 09:14 UTCOSV refresh
  3. 2026-08-20 22:51 UTCEPSS rescore
  4. 2026-08-19 17:00 UTCEPSS rescore
  5. 2026-08-18 13:44 UTCEPSS rescore
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  12. 2026-08-08 16:33 UTCEPSS rescore
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  14. 2026-08-06 13:43 UTCEPSS rescore
  15. 2026-08-05 22:21 UTCOSV refresh
  16. 2026-08-05 19:13 UTCEPSS rescore
  17. 2026-08-04 15:05 UTCEPSS rescore
  18. 2026-08-02 02:23 UTCEPSS rescore
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  20. 2026-07-30 16:24 UTCEPSS rescore
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  1. 2026-07-24 14:14 UTCEPSS rescore
  2. 2026-07-23 14:15 UTCEPSS rescore
  3. 2026-07-23 01:42 UTCEG score recompute
  4. 2026-07-22 22:22 UTCEG score recompute
  5. 2026-07-22 14:05 UTCEPSS rescore
  6. 2026-07-21 15:22 UTCEPSS rescore
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  8. 2026-07-20 17:04 UTCEPSS rescore
  9. 2026-07-20 17:04 UTCEPSS rescore
  10. 2026-07-20 00:38 UTCOSV refresh
  11. 2026-07-19 14:28 UTCEPSS rescore
  12. 2026-07-19 14:28 UTCEPSS rescore
  13. 2026-07-19 02:26 UTCEPSS rescore
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  20. 2026-07-13 22:27 UTCEPSS rescore
  21. 2026-07-13 06:10 UTCEPSS rescore
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  23. 2026-07-12 05:43 UTCEPSS rescore
  24. 2026-07-12 05:43 UTCEPSS rescore
  25. 2026-07-11 08:24 UTCEPSS rescore
  26. 2026-07-11 08:24 UTCEPSS rescore
  27. 2026-07-09 19:06 UTCEPSS rescore
  28. 2026-07-08 15:11 UTCEPSS rescore
  29. 2026-07-07 13:43 UTCEPSS rescore
  30. 2026-07-06 16:25 UTCEPSS rescore
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  34. 2026-07-04 06:28 UTCEPSS rescore
  35. 2026-07-02 15:22 UTCOSV refresh
  36. 2026-07-01 15:03 UTCEPSS rescore
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  38. 2026-06-30 23:20 UTCEPSS rescore
  39. 2026-06-29 14:03 UTCEPSS rescore
  40. 2026-06-28 14:04 UTCEPSS rescore
  41. 2026-06-28 04:54 UTCEPSS rescore
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  43. 2026-06-27 03:06 UTCEPSS rescore
  44. 2026-06-25 13:47 UTCEPSS rescore
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  48. 2026-06-23 21:31 UTCEPSS rescore
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  50. 2026-06-21 14:54 UTCEPSS rescore
  51. 2026-06-21 14:54 UTCEPSS rescore
  52. 2026-06-19 19:23 UTCEPSS rescore
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  54. 2026-06-18 17:50 UTCEPSS rescore
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  58. 2026-06-14 23:15 UTCEPSS rescore
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  60. 2026-06-14 13:13 UTCOSV refresh
  61. 2026-06-13 22:58 UTCEPSS rescore
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  63. 2026-06-11 13:58 UTCEPSS rescore
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  67. 2026-06-07 15:23 UTCEPSS rescore
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  69. 2026-06-06 13:45 UTCEPSS rescore
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  71. 2026-06-05 22:45 UTCEPSS rescore
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  73. 2026-06-05 06:08 UTCEPSS rescore
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  75. 2026-06-04 13:10 UTCEPSS rescore

Frequently asked(5)

What is CVE-2019-18345?
CVE-2019-18345 is a critical vulnerability published on December 12, 2019. A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an…
When was CVE-2019-18345 disclosed?
CVE-2019-18345 was first published in the National Vulnerability Database on December 12, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-18345 actively exploited?
CVE-2019-18345 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 18.5% of all scored CVEs.
What is the CVSS score of CVE-2019-18345?
CVE-2019-18345 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2019-18345?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-18345, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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