CVE-2025-53628

highpriority · track · 35EPSS 0.005 · 44 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.52% (44th) EPSS

CVSS 8.8 · high

Is it mine?

3 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.20.1, cpp-httplib does not have a limit for a unique line, permitting an attacker to explore this to allocate memory arbitrarily. This vulnerability is fixed in 0.20.1. NOTE: This vulnerability is related to CVE-2025-53629.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.aarch64 as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.aarch64 as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.ppc64le as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.ppc64le as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.s390x as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.s390x as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.x86_64 as component of SUSE Linux Enterprise Server 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.x86_64 as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedcpp-httplib-devel-0:0.22.0-160000.4.1.aarch64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedcpp-httplib-devel-0:0.22.0-160000.4.1.ppc64le as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedcpp-httplib-devel-0:0.22.0-160000.4.1.s390x as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedcpp-httplib-devel-0:0.22.0-160000.4.1.x86_64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.aarch64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.ppc64le as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.s390x as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedlibcpp-httplib0_22-0:0.22.0-160000.4.1.x86_64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 1.7–8.8

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.17.3highAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · FSTEC (BDU) RU

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Lsecondary · SUSE Product Security

v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.06.3mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security-advisories@github.com

v4.01.7lowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-444USprimaryCWE-444USCWE-770USCWE-835US

affected products (3)

Products and version ranges known to be affected.

yhirose cpp-httplib≤ < 0.20.1enisa_euvdEU
Сообщество свободного программного обеспечения cpp-httplib≤ 0.23.0fstec_bduRU
yhirose cpp-httplib< 0.20.1nvdUScpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

SUSE-SU-2026:20600-1Security update for cpp-httplib2026-03-02csaf · suse_csafDE
Security update for cpp-httplib
openSUSE-SU-2026:20295-1Security update for cpp-httplib2026-03-02csaf · suse_csafDE
Security update for cpp-httplib

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd suse_csaf NVD CVE.org MITRE

published 2025-07-10modified 2026-06-17

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+547 more

references (10)

External citations — patches, advisories, analysis.

scry

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