CVE-2026-49848

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 4.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (20th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
4.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 4.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, mod_verto's check_auth userauth branch wrote request-supplied userVariables into the connection state before comparing the supplied password. The writes are append-only and the connection is not closed on a failed compare, so values declared on bad-password attempts persisted on the same WebSocket and carried into a subsequent successful login on that connection. This issue has been patched in version 1.11.1.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100

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 (value × EchelonGraph’s weight)
Severity43% × 45%
The EG Score, 4.3 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
20th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jun 16, 2026
Patch available. Sources: github_release, github.
GitHub advisoryMentions a patch (unverified)

Pre-authentication `userVariables` injection in `mod_verto`. · Advisory · signalwire/freeswitch · GitHub

https://github.com/signalwire/freeswitch/security/advisories/GHSA-j38x-xm7f-9p2f
GitHub release Patch Available

FreeSWITCH v1.11.1 Release

Patch available: signalwire/freeswitch v1.11.1

https://github.com/signalwire/freeswitch/releases/tag/v1.11.1

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 28× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 152 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 52 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  4. 2026-10-12 15:59 UTCEG score recompute
  5. 2026-10-11 19:43 UTCEG score recompute
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  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 19th percentile
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  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
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  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  17. 2026-10-03 09:39 UTCOSV refresh
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  20. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 19th percentile
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  22. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  23. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  24. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  1. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-09-14 04:35 UTCEG score recompute
  5. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  7. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  9. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  12. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-08-31 00:54 UTCEG score recompute
  14. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  15. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  19. 2026-08-25 00:50 UTCEG score recompute
  20. 2026-08-23 11:13 UTCEG score recompute
  21. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  22. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-08-21 07:27 UTCEG score recompute
  24. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-08-20 09:07 UTCEG score recompute
  26. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  27. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  28. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  29. 2026-08-17 00:44 UTCEG score recompute
  30. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  31. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  32. 2026-08-15 01:31 UTCEG score recompute
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  34. 2026-08-14 03:37 UTCEG score recompute
  35. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  37. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  38. 2026-08-12 07:42 UTCEG score recompute
  39. 2026-08-11 07:38 UTCEG score recompute
  40. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  41. 2026-08-10 09:44 UTCEG score recompute
  42. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  44. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  45. 2026-08-08 13:55 UTCEG score recompute
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  47. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  48. 2026-08-05 20:11 UTCEG score recompute
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  50. 2026-08-04 16:10 UTCEG score recompute
  51. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  52. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  53. 2026-08-03 15:01 UTCEG score recompute
  54. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  59. 2026-07-31 09:13 UTCEG score recompute
  60. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  65. 2026-07-28 08:02 UTCEG score recompute
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  67. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  68. 2026-07-26 06:48 UTCEG score recompute
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  71. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  72. 2026-07-23 03:18 UTCEG score recompute
  73. 2026-07-22 14:08 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  74. 2026-07-21 15:25 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  75. 2026-07-20 17:08 UTCEPSS rescoreEPSS 0.2% · 6th percentile

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Frequently asked(5)

What is CVE-2026-49848?
CVE-2026-49848 is a medium-severity vulnerability; its CVE record was published on June 9, 2026. FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, modverto's checkauth userauth branch wrote request-supplied userVariables into the…
When was the CVE record for CVE-2026-49848 published?
The CVE record for CVE-2026-49848 was published on June 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 23, 2026; the record at its source may have been updated since.
Is CVE-2026-49848 actively exploited?
CVE-2026-49848 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (20th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49848?
CVE-2026-49848 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-49848?
A fix for CVE-2026-49848 is available: update to the fixed version the vendor names in its advisory.

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