CVE-2018-25026: An issue was discovered in the actix-web crate before 0.7.15 for Rust

Q: How do I fix CVE-2018-25026?

actix-web: upgrade to 0.7.15. Exact commands for each OS are on this page.

Q: Is CVE-2018-25026 being exploited?

CVE-2018-25026 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-25026 affect?

CVE-2018-25026 affects actix-web. Severity is critical (CVSS 9.8). An issue was discovered in the actix-web crate before 0.7.15 for Rust. It can add the Send marker trait to an object that cannot be sent between threads safely, leading to memory corruption.

Q: How urgent is CVE-2018-25026?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2018-25026 is a critical-severity flaw (CVSS 9.8) affecting actix-web. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the actix-web crate before 0.7.15 for Rust. It can add the Send marker trait to an object that cannot be sent between threads safely, leading to memory corruption.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-787
Published	2021-12-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: actix

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-12-27 00:15 UTCPublished CVE record published
2026-06-17 01:54 UTCUpdated Record last modified

actix actix-web UPGRADE

Affected: < 0.7.15

Fixed in: 0.7.15

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy actix-web || rpm -q actix-web || actix-web --version

2. UPGRADE to 0.7.15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade actix-web

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade actix-web

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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.

Quick answers

How do I fix CVE-2018-25026?

actix-web: upgrade to 0.7.15. Exact commands for each OS are on this page.

Is CVE-2018-25026 being exploited?

CVE-2018-25026 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-2018-25026 affect?

CVE-2018-25026 affects actix-web. Severity is critical (CVSS 9.8). An issue was discovered in the actix-web crate before 0.7.15 for Rust. It can add the Send marker trait to an object that cannot be sent between threads safely, leading to memory corruption.

How urgent is CVE-2018-25026?

Priority 57/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-25025 CRITICAL 9.8 UPGRADE An issue was discovered in the actix-web crate before 0.7.15 for Rust
CVE-2018-25024 CRITICAL 9.8 UPGRADE An issue was discovered in the actix-web crate before 0.7.15 for Rust

References

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