CVE-2026-45771

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 74% 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, secondary
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

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 1.11.0, FreeSWITCH's bundled XML parser expands nested declarations without a depth or count bound, so a small DTD can describe a body that expands exponentially ("billion laughs"). The PIDF body of a SIP PUBLISH is fed to this parser before any digest check, letting an unauthenticated network attacker force unbounded CPU and memory consumption with a single request. This issue has been patched in version 1.11.0.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
26.4%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 10, 2026

Advisory Details (2)

Auto-updated Jun 9, 2026
Patch available. Sources: github_release, github.
github Patch Available

Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion · Advisory · signalwire/freeswitch · GitHub

https://github.com/signalwire/freeswitch/security/advisories/GHSA-5vjg-pv56-vg4c
github_release Patch Available

FreeSWITCH v1.11.0 Release

Patch available: signalwire/freeswitch v1.11.0

https://github.com/signalwire/freeswitch/releases/tag/v1.11.0

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 90× 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. 2026-07-11 19:35 UTCEG score recompute
  2. 2026-07-11 08:34 UTCEG score recompute
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-10 20:55 UTCEG score recompute
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  13. 2026-07-06 00:47 UTCEG score recompute
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  1. 2026-06-30 23:22 UTCEPSS rescore
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  5. 2026-06-29 14:06 UTCEPSS rescore
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  27. 2026-06-23 11:02 UTCEG score recompute
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  34. 2026-06-21 10:36 UTCEG score recompute
  35. 2026-06-21 01:59 UTCEPSS rescore
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  37. 2026-06-20 21:34 UTCEG score recompute
  38. 2026-06-20 08:08 UTCEG score recompute
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  40. 2026-06-19 19:26 UTCEPSS rescore
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  42. 2026-06-19 09:42 UTCEG score recompute
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  48. 2026-06-17 17:53 UTCEPSS rescore
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  59. 2026-06-13 23:00 UTCEPSS rescore
  60. 2026-06-13 19:24 UTCEG score recompute
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  62. 2026-06-12 23:12 UTCEPSS rescore
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  64. 2026-06-12 21:24 UTCEG score recompute
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  66. 2026-06-11 23:23 UTCEG score recompute
  67. 2026-06-11 14:00 UTCEPSS rescore
  68. 2026-06-11 12:24 UTCEG score recompute
  69. 2026-06-11 01:23 UTCEG score recompute
  70. 2026-06-10 22:18 UTCEPSS rescore
  71. 2026-06-10 14:23 UTCEG score recompute
  72. 2026-06-10 03:23 UTCEG score recompute
  73. 2026-06-09 16:24 UTCEG score recompute
  74. 2026-06-09 16:22 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-45771?
CVE-2026-45771 is a high vulnerability 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 1.11.0, FreeSWITCH's bundled XML parser expands nested <!ENTITY> declarations without a depth or…
When was CVE-2026-45771 disclosed?
CVE-2026-45771 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on June 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45771 actively exploited?
CVE-2026-45771 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45771?
CVE-2026-45771 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-45771?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45771, 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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