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NVD / CVE Program· CNA mitre

CVE-2026-44928: In uriparser before 1.0.2, the function family EqualsUri can misclassify two unequal URIs as equal.

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: uriparser uriparser 1.0.2.
  • Severity is disputed: the assigning authority (CNA) scores it 2.9, NVD 5.3.

Low priority for now. Upgrade to uriparser uriparser 1.0.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
May 8, 2026
Updated
Jun 17, 2026
EPSS
0.2% · 11th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.3
CNA · mitre
2.9
2.4 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-44928

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
uriparser projecturiparser

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • uriparser project uriparserbefore 1.0.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mitre). Independent of NVD's CPE analysis and usually ahead of it.

  • uriparser uriparser

    • before 1.0.2affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12uriparserfrom 0—
openSUSE:Leap 16.0uriparserbefore 0.9.8-160000.5.10.9.8-160000.5.1
openSUSE:Tumbleweedphp8before 8.5.7-1.18.5.7-1.1
openSUSE:Tumbleweeduriparserbefore 1.0.2-1.11.0.2-1.1
Red Hat:hummingbird:1mingw32-uriparserbefore 0:1.0.2-1.hum10:1.0.2-1.hum1
Red Hat:hummingbird:1mingw64-uriparserbefore 0:1.0.2-1.hum10:1.0.2-1.hum1
Red Hat:hummingbird:1uriparserbefore 0:1.0.2-1.hum10:1.0.2-1.hum1
Red Hat:hummingbird:1uriparser-develbefore 0:1.0.2-1.hum10:1.0.2-1.hum1
Red Hat:hummingbird:1uriparser-docbefore 0:1.0.2-1.hum10:1.0.2-1.hum1
SUSE:Linux Enterprise Module for Package Hub 15 SP7uriparserbefore 0.8.5-150000.3.14.10.8.5-150000.3.14.1
SUSE:Linux Enterprise Server 16.0uriparserbefore 0.9.8-160000.5.10.9.8-160000.5.1

Same product

uriparser project: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-20721URI_FUNC() in UriParse.c in uriparser before 0.9.1 has an out-of-bounds read (in uriParse*Ex* functions) for an incomplete URI with an IPv6
    40Plan
  • CVE-2018-19199An issue was discovered in uriparser before 0.9.0.
    40Plan
  • CVE-2018-19198An issue was discovered in uriparser before 0.9.0.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-67899Dec 14, 2025 · uriparser through 0.9.9 allows unbounded recursion and stack consumption, as demonstrated by ParseMustBeSegmentNzNc with large input contain
    11Monitor
  • ← EarlierCVE-2026-42371Apr 27, 2026 · uriparser before 1.0.1 has numeric truncation in text range comparison, if an application accepts URIs with a length in gigabytes.
    20Monitor
  • ← EarlierCVE-2026-44927May 8, 2026 · In uriparser before 1.0.2, there is pointer difference truncation to int in various places.
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
uriparser uriparser1.0.2Vendor (CNA)
opensuse:php88.5.7-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:uriparser1.0.2-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:mingw32-uriparser0:1.0.2-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:mingw64-uriparser0:1.0.2-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:uriparser0:1.0.2-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:uriparser-devel0:1.0.2-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:uriparser-doc0:1.0.2-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
suse:uriparser0.9.8-160000.5.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-670 · Always-Incorrect Control Flow Implementation

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records