Skip to content
Noroxi
CVE.org (no NVD analysis yet)· CNA curl

CVE-2026-107928: info leak uploading over WebSockets with GnuTLS

HighCVSS 8.1 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 32/100)

  • 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: 0.70% (FIRST EPSS); higher than 53.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: azl3 cmake 3.30.3-15 on Azure Linux 3.0 Release Notes; azl3 curl 8.11.1-11 on Azure Linux 3.0 Release Notes; azl3 mysql 8.0.46-2 on Azure Linux 3.0 Release Notes.

Low priority for now. Upgrade to azl3 cmake 3.30.3-15 on Azure Linux 3.0 Release Notes; azl3 curl 8.11.1-11 on Azure Linux 3.0 Release Notes; azl3 mysql 8.0.46-2 on Azure Linux 3.0 Release Notes 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

When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when `gnutls_record_send()` returns a number of bytes sent **greater than the number of bytes it was given to send**. GnuTLS does that after a blocked send.

Published
Oct 20, 2026
Updated
Oct 30, 2026
EPSS
0.7% · 53th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

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-2026-107928

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for curl records
Is your version affected? Check it

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.

We use this product, ask for help

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.

—

Versions reported by the vendor

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

  • curl curl

    • 8.22.0 and later · up to and including 8.22.0affected · semver
    • 8.21.0 and later · up to and including 8.21.0affected · semver
    • 8.20.0 and later · up to and including 8.20.0affected · semver
    • 8.19.0 and later · up to and including 8.19.0affected · semver
    • 8.18.0 and later · up to and including 8.18.0affected · semver
    • 8.17.0 and later · up to and including 8.17.0affected · semver
    • 8.16.0 and later · up to and including 8.16.0affected · semver
    • 8.15.0 and later · up to and including 8.15.0affected · semver
    • 8.14.1 and later · up to and including 8.14.1affected · semver
    • 8.14.0 and later · up to and including 8.14.0affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Alpine:v3.23curlbefore 8.23.0-r08.23.0-r0
Debian:12curlfrom 0—
openSUSE:Tumbleweedcurlbefore 8.23.0-1.18.23.0-1.1
Red Hat:hummingbird:1curlbefore 0:8.23.0-0.1.hum10:8.23.0-0.1.hum1
Red Hat:hummingbird:1libcurlbefore 0:8.23.0-0.1.hum10:8.23.0-0.1.hum1
Red Hat:hummingbird:1libcurl-develbefore 0:8.23.0-0.1.hum10:8.23.0-0.1.hum1
Red Hat:hummingbird:1libcurl-minimalbefore 0:8.23.0-0.1.hum10:8.23.0-0.1.hum1

Same product

curl: all records

Other highest-scoring records for the same primary product.

Published before and after this one in the same product

  • ← EarlierCVE-2026-86412Oct 20, 2026 · server-set cookie erases cookie jar
    32Monitor
  • ← EarlierCVE-2026-86413Oct 20, 2026 · Negotiate credentials sent to redirected origin
    36Monitor
  • Later →CVE-2026-107929Oct 20, 2026 · local interface connection reuse mixup
    32Monitor

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
azl3 cmake 3.30.3-15 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 curl 8.11.1-11 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 mysql 8.0.46-2 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 rust 1.75.0-31 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 rust 1.96.1-2 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 tensorflow 2.16.1-11 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
alpine:curl8.23.0-r0 · Alpine:v3.23Package registry (OSV)
opensuse:curl8.23.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:curl0:8.23.0-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:libcurl0:8.23.0-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:libcurl-devel0:8.23.0-0.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:libcurl-minimal0:8.23.0-0.1.hum1 · Red Hat:hummingbird:1Package 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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 12, 2026+23 d
EPSS, last 120 days

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

Credits

All researchers

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

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Not on record for this CVE: patch commit or PR link · variant or chain candidate.

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.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-126 · Buffer Over-read

CVSS vector

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

nvd-secondary

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. CVSS— → 8.1
  2. Severity— → high
  3. SSVC exploitation— → poc
  4. Fix✗ → ✓
  5. Exploit maturity— → none

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

References

Show all references (2 more)

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

All records