CVE-2013-4103

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 6.9%, top 7% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Exploit-DB (verified), public exploit)
CISA-KEV: Not listedEPSS PROB: 7%CVSS: 9.8Exploit: Exploit-DB (verified) · public exploitExposed: 0

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

Cryptocat before 2.0.22 has Remote Script Injection due to improperly sanitizing user input

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Track*)
EG Risk 75/100SSVC: 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
Severity98% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
7%
EPSS %ILE
94%
KEV
Not listed

Published

November 4, 2019

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Aug 15, 2026
No patch confirmed yet.
generic

SecurityFocus

https://www.securityfocus.com/bid/61093
generic

oss-security - Re: Re: Re: Re: cryptocat/decryptocat - needs a cve?

https://www.openwall.com/lists/oss-security/2013/07/10/15
generic

Locked Out | Packet Storm

https://packetstormsecurity.com/files/cve/CVE-2013-4103
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/134252/Cryptocat-Script-Insertion.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 20× 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.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-38637✓ verified
    First seen Nov 7, 2012

    Cryptocat 2.0.22 - Arbitrary Script Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2013-4103?
CVE-2013-4103 is a critical vulnerability published on November 4, 2019. Cryptocat before 2.0.22 has Remote Script Injection due to improperly sanitizing user input
When was CVE-2013-4103 disclosed?
CVE-2013-4103 was first published in the National Vulnerability Database on November 4, 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-2013-4103 actively exploited?
CVE-2013-4103 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7% probability of exploitation in the next 30 days, which ranks it in the top 6.5% of all scored CVEs.
What is the CVSS score of CVE-2013-4103?
CVE-2013-4103 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2013-4103?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-4103, 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.

Dependency Blast Radius

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