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: 2.2%CVSS: 9.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
9.3CRITICALmedium confidence
EG Risk
47
EG Risk 47/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
2.2%
EPSS %ILE
82nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

December 12, 2019

Last Modified

November 21, 2024

Advisory Details (8)

Auto-updated Sep 15, 2026
Patch available.
generic

ChangeLog · master · DAViCal Project / DAViCal · GitLab

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

Locked Out | Packet Storm

http://packetstormsecurity.com/files/155630/DAViCal-CalDAV-Server-1.1.8-Reflective-Cross-Site-Scripting.html
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
genericMentions a patch (unverified)

[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/
generic

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

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

Affected Packages

(7 across 7 ecosystems)
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
davical1.1.8-1, 1.1.8-1+deb10u1~bpo9+1
  • every version up to 1.1.8-1+deb10u1: fixed in 1.1.8-1+deb10u1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
davical—
  • every version up to 1.1.9.2-1: fixed in 1.1.9.2-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
davical—
  • every version up to 1.1.9.2-1: fixed in 1.1.9.2-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
davical—
  • every version up to 1.1.9.2-1: fixed in 1.1.9.2-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
davical—
  • every version up to 1.1.9.2-1: fixed in 1.1.9.2-1
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
davical1.1.3.1-1
  • every version up to 1.1.3.1-1+deb8u1: fixed in 1.1.3.1-1+deb8u1
—
Debian:9(1)
PackageVulnerable rangeFix by version rangeDependents
davical1.1.5-1
  • every version up to 1.1.5-1+deb9u1: fixed in 1.1.5-1+deb9u1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 25× 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 156 total refreshes for this CVE.

  1. 2026-10-05 17:39 UTCEPSS rescore
  2. 2026-10-03 14:22 UTCEPSS rescore
  3. 2026-09-30 14:59 UTCEPSS rescore
  4. 2026-09-30 10:14 UTCEG score recompute
  5. 2026-09-28 13:46 UTCEPSS rescore
  6. 2026-09-27 14:37 UTCOSV refresh
  7. 2026-09-27 13:40 UTCEPSS rescore
  8. 2026-09-26 15:54 UTCEPSS rescore
  9. 2026-09-26 15:54 UTCEPSS rescore
  10. 2026-09-26 00:20 UTCEPSS rescore
  11. 2026-09-24 13:59 UTCEPSS rescore
  12. 2026-09-23 13:43 UTCEPSS rescore
  13. 2026-09-22 14:43 UTCEPSS rescore
  14. 2026-09-21 20:28 UTCEPSS rescore
  15. 2026-09-18 19:22 UTCEPSS rescore
  16. 2026-09-17 19:22 UTCEPSS rescore
  17. 2026-09-16 14:04 UTCEPSS rescore
  18. 2026-09-15 03:05 UTCEPSS rescore
  19. 2026-09-13 16:42 UTCEPSS rescore
  20. 2026-09-12 14:56 UTCEPSS rescore
  21. 2026-09-11 14:48 UTCEPSS rescore
  22. 2026-09-11 09:32 UTCEPSS rescore
  23. 2026-09-07 23:21 UTCOSV refresh
  24. 2026-09-07 15:57 UTCEPSS rescore
  25. 2026-09-06 13:44 UTCEPSS rescore
Show 75 more
  1. 2026-09-05 15:24 UTCEPSS rescore
  2. 2026-09-04 13:56 UTCEPSS rescore
  3. 2026-09-02 14:07 UTCEPSS rescore
  4. 2026-09-01 03:32 UTCEPSS rescore
  5. 2026-08-30 19:13 UTCEPSS rescore
  6. 2026-08-30 01:18 UTCEPSS rescore
  7. 2026-08-28 21:36 UTCEPSS rescore
  8. 2026-08-27 14:21 UTCEPSS rescore
  9. 2026-08-26 14:42 UTCEPSS rescore
  10. 2026-08-25 13:45 UTCEPSS rescore
  11. 2026-08-24 14:11 UTCEPSS rescore
  12. 2026-08-21 23:45 UTCEPSS rescore
  13. 2026-08-21 09:14 UTCOSV refresh
  14. 2026-08-20 22:51 UTCEPSS rescore
  15. 2026-08-19 17:00 UTCEPSS rescore
  16. 2026-08-18 13:44 UTCEPSS rescore
  17. 2026-08-17 13:43 UTCEPSS rescore
  18. 2026-08-16 14:52 UTCEPSS rescore
  19. 2026-08-16 02:10 UTCEPSS rescore
  20. 2026-08-15 01:26 UTCEPSS rescore
  21. 2026-08-12 13:47 UTCEPSS rescore
  22. 2026-08-09 13:43 UTCEPSS rescore
  23. 2026-08-08 16:33 UTCEPSS rescore
  24. 2026-08-07 16:23 UTCEPSS rescore
  25. 2026-08-06 13:43 UTCEPSS rescore
  26. 2026-08-05 22:21 UTCOSV refresh
  27. 2026-08-05 19:13 UTCEPSS rescore
  28. 2026-08-04 15:05 UTCEPSS rescore
  29. 2026-08-02 02:23 UTCEPSS rescore
  30. 2026-08-01 04:12 UTCEPSS rescore
  31. 2026-07-30 16:24 UTCEPSS rescore
  32. 2026-07-30 01:27 UTCEPSS rescore
  33. 2026-07-28 15:32 UTCEPSS rescore
  34. 2026-07-26 14:51 UTCEPSS rescore
  35. 2026-07-25 14:14 UTCEPSS rescore
  36. 2026-07-24 14:14 UTCEPSS rescore
  37. 2026-07-24 14:14 UTCEPSS rescore
  38. 2026-07-23 14:15 UTCEPSS rescore
  39. 2026-07-23 01:42 UTCEG score recompute
  40. 2026-07-22 22:22 UTCEG score recompute
  41. 2026-07-22 14:05 UTCEPSS rescore
  42. 2026-07-21 15:22 UTCEPSS rescore
  43. 2026-07-21 15:22 UTCEPSS rescore
  44. 2026-07-20 17:04 UTCEPSS rescore
  45. 2026-07-20 17:04 UTCEPSS rescore
  46. 2026-07-20 00:38 UTCOSV refresh
  47. 2026-07-19 14:28 UTCEPSS rescore
  48. 2026-07-19 14:28 UTCEPSS rescore
  49. 2026-07-19 02:26 UTCEPSS rescore
  50. 2026-07-19 02:26 UTCEPSS rescore
  51. 2026-07-18 10:01 UTCEPSS rescore
  52. 2026-07-16 16:59 UTCEPSS rescore
  53. 2026-07-16 16:59 UTCEPSS rescore
  54. 2026-07-15 16:55 UTCEPSS rescore
  55. 2026-07-15 16:55 UTCEPSS rescore
  56. 2026-07-13 22:27 UTCEPSS rescore
  57. 2026-07-13 06:10 UTCEPSS rescore
  58. 2026-07-13 06:10 UTCEPSS rescore
  59. 2026-07-12 05:43 UTCEPSS rescore
  60. 2026-07-12 05:43 UTCEPSS rescore
  61. 2026-07-11 08:24 UTCEPSS rescore
  62. 2026-07-11 08:24 UTCEPSS rescore
  63. 2026-07-09 19:06 UTCEPSS rescore
  64. 2026-07-08 15:11 UTCEPSS rescore
  65. 2026-07-07 13:43 UTCEPSS rescore
  66. 2026-07-06 16:25 UTCEPSS rescore
  67. 2026-07-06 16:25 UTCEPSS rescore
  68. 2026-07-06 02:20 UTCEPSS rescore
  69. 2026-07-05 02:27 UTCEPSS rescore
  70. 2026-07-04 06:28 UTCEPSS rescore
  71. 2026-07-02 15:22 UTCOSV refresh
  72. 2026-07-01 15:03 UTCEPSS rescore
  73. 2026-07-01 15:03 UTCEPSS rescore
  74. 2026-06-30 23:20 UTCEPSS rescore
  75. 2026-06-29 14:03 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

2 shown

Debian:10:davical

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 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 2.2% probability of exploitation in the next 30 days (82nd percentile of EPSS-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?
A fix for CVE-2019-18345 is available: update to the fixed version the vendor names in its advisory.

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