PatchTheCVECVE-2023-28322: An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might err
44
This week
LOW 3.7REMOTEUPGRADEMITIGATEUPGRADE
CVE-2023-28322 is a low-severity flaw (CVSS 3.7) affecting curl, fedora, macos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle previously wasused to issue a `PUT` request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory
Why this priority
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 3.7 (Low) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.2% (top 18%) |
| CISA exploited list | No |
| Weakness | CWE-200 |
| Published | 2023-05-26 |
| Last modified | 2026-10-23 |
Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
haxx curl UPGRADE
Affected: < 8.1.0
Fixed in: 8.1.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy curl || rpm -q curl || curl --version
2. UPGRADE to 8.1.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade curl
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade curl
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
fedoraproject fedora MITIGATE
Affected: 37 · 38
Fixed in: no fixed release known
Safe to downgrade to: a release before 37
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
apple macos UPGRADE
Affected: >= 11.0 and < 11.7.9 · >= 12.0 and < 12.6.8 · >= 13.0 and < 13.5
Fixed in: 11.7.9, 12.6.8, 13.5
Safe to downgrade to: a release before 11.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
netapp clustered data ontap MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy clustered-data-ontap || rpm -q clustered-data-ontap || clustered-data-ontap --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.
netapp ontap antivirus connector MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy ontap-antivirus-connector || rpm -q ontap-antivirus-connector || ontap-antivirus-connector --version
No fixed or unaffected release known
Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.
netapp h300s firmware MITIGATE
Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Exact fixes by distribution
A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · kwin-zones · FIXED · 1.0.13-1.fc46 · FEDORA-2026-95888f332b · source
sudo dnf upgrade --advisory=FEDORA-2026-95888f332b
Fedora ELN · nginx-mod-brotli · FIXED · 1.0.0~rc-16.eln159 · FEDORA-2026-501a6a8273 · source
sudo dnf upgrade --advisory=FEDORA-2026-501a6a8273
Debian 12 · curl · FIXED · 7.88.1-10
sudo apt update && sudo apt install --only-upgrade curl
dpkg --compare-versions "$(dpkg-query -W -f='${Version}' curl)" ge "7.88.1-10" && echo PATCHED || echo STILL-VULNERABLE
Debian 13 · curl · FIXED · 7.88.1-10
sudo apt update && sudo apt install --only-upgrade curl
dpkg --compare-versions "$(dpkg-query -W -f='${Version}' curl)" ge "7.88.1-10" && echo PATCHED || echo STILL-VULNERABLE
RHEL 8 · curl · FIXED · curl-7.61.1-33.el8_9.5
sudo dnf upgrade --advisory=RHSA-2024:1601
rpm -q curl
RHEL 8.6 Extended Update Support · curl · FIXED · curl-7.61.1-22.el8_6.12
sudo dnf upgrade --advisory=RHSA-2024:0428
rpm -q curl
RHEL 8.8 Extended Update Support · curl · FIXED · curl-7.61.1-30.el8_8.9
sudo dnf upgrade --advisory=RHSA-2024:0585
rpm -q curl
RHEL 9 · curl · FIXED · curl-7.76.1-23.el9_2.2
sudo dnf upgrade --advisory=RHSA-2023:4354
rpm -q curl
RHEL 9.0 Extended Update Support · curl · FIXED · curl-7.76.1-14.el9_0.7
sudo dnf upgrade --advisory=RHSA-2023:5598
rpm -q curl
Alpine 3.20 · curl · FIXED · curl-8.1.0-r0
apk add --upgrade curl
apk info -v curl
Alpine 3.21 · curl · FIXED · curl-8.1.0-r0
apk add --upgrade curl
apk info -v curl
Alpine 3.22 · curl · FIXED · curl-8.1.0-r0
apk add --upgrade curl
apk info -v curl
Alpine 3.23 · curl · FIXED · curl-8.1.0-r0
apk add --upgrade curl
apk info -v curl
sudo dnf update --advisory=ALAS2023-2023-270
sudo yum update --advisory=ALAS2-2023-2230
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-28322?
curl: upgrade to 8.1.0; fedora: mitigate or apply the listed mitigation; macos: upgrade to 11.7.9, 12.6.8, 13.5. Exact commands for each OS are on this page.
Is CVE-2023-28322 being exploited?
CVE-2023-28322 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-28322 affect?
CVE-2023-28322 affects curl, fedora, macos. Severity is low (CVSS 3.7). An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has bee
How urgent is CVE-2023-28322?
Priority 44/100. Public exploit reference; Remotely exploitable, no login, no user action
Software pages
macOS vulnerabilities · curl vulnerabilities
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