CVE-2026-49788: Allocation of resources without limits or throttling in HTTP/2 allows an unauthorized attacker to deny service over a network.

highCVSS 7.5CVE-2026-49788

Allocation of resources without limits or throttling in HTTP/2 allows an unauthorized attacker to deny service over a network.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.5
Published: 2026-07-14
Last updated: 2026-07-20
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-49788

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-497880.78% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-49788	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownexploitedNCSC-2026-0231 [1.00] [M/H] Vulnerabilities fixed in Microsoft Windowsncsc-nl
highCVE-2026-49788: HTTP/2 Denial of Service Vulnerabilitymsrc

Recent advisories for Allocation of resources

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-55734: Allocation of Resources Without Limits or Throttling vulnerability in ueberauth guardian (Guar…nvd · 2026-08-01
unknownCVE-2026-55733: Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of se…nvd · 2026-08-01
unknownCVE-2026-54894: Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of se…nvd · 2026-08-01
unknownCVE-2026-14539: An allocation of resources without limits vulnerability in the HTTP handler component of Googl…nvd · 2026-07-31
unknownCVE-2026-65624: Allocation of Resources Without Limits or Throttling vulnerability in ninenines cowboy allows …nvd · 2026-07-28
unknownCVE-2026-59248: Allocation of resources without limits vulnerability in ninenines cowlib allows an unauthentic…nvd · 2026-07-28