Is CVE-2026-10725 in the CISA KEV catalog?

No. CVE-2026-10725 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-10725?

CVE-2026-10725 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2026-10725?

CVE-2026-10725 has an EPSS score of 0.41% (34th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-10725?

Upgrade libprotocol-http2-perl on debian unstable to 1.12-2 or later.

CVE & CISA-KEV Catalog

CVE-2026-10725

HIGH

7.5

CVSS v3

NVD

Description

Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb. Protocol::HTTP2's inbound HPACK path has no header-list size limit, so a small HTTP/2 request can expand into large server memory (the "HTTP/2 bomb"). The headers_decode method materialises a full key+value copy per indexed reference with no running size check, and the stream_header_block_add method appends (since version 1.12) every CONTINUATION frame to the per-stream buffer unbounded. MAX_HEADER_LIST_SIZE (default 65536) is advertised in SETTINGS but never consulted on decode. It is absent from the decoder and from the :limits export tag.

CWE-409

How to fix

Remediation Available

libprotocol-http2-perlDebian

Fixed in:1.12-2CVE-2026-10725

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.41%probability of exploitation in 30 days

34thpercentile

Low risk: more likely to be exploited than 34% of all known CVEs.

References

Patch2

Third-Party Advisory1

openwall.com

Release Notes1

metacpan.org

Product2

Related Vulnerabilities

Other CWE-409 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-49975	High	7.5	11%	-	Fix
CVE-2026-21441	High	7.5	2.7%	-	Fix
CVE-2024-43499	High	7.5	2.6%	-	Fix
CVE-2024-28180	Medium	4.3	2.0%	-	Fix
CVE-2017-16129	Medium	5.9	1.8%	-	Fix
CVE-2022-29225	High	7.5	1.4%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-10.