How severe is CVE-2026-49848?

CVE-2026-49848 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-49848 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-49848?

CVE-2026-49848 affects Freeswitch. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-49848?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-49848 have an EU (EUVD) identifier?

Yes. CVE-2026-49848 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35495.

When was CVE-2026-49848 published?

CVE-2026-49848 was published on 2026-06-09 and last updated on 2026-07-23.

CVE-2026-49848

CVE-2026-49848 is a medium-severity vulnerability in Freeswitch with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35495
Weakness: CWE-287
Affected product: Freeswitch
Published: 2026-06-09
Last modified: 2026-07-23

Description

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.

Frequently asked questions

What is CVE-2026-49848?: 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.
How severe is CVE-2026-49848?: CVE-2026-49848 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-49848 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-49848?: CVE-2026-49848 affects Freeswitch. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-49848?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-49848 have an EU (EUVD) identifier?: Yes. CVE-2026-49848 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35495.
When was CVE-2026-49848 published?: CVE-2026-49848 was published on 2026-06-09 and last updated on 2026-07-23.

References

Affected products (1)

cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*

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