CVE-2007-0157: Array index error in the uri_lookup function in the URI parser for neon 0.26.0 to 0.26.2, possibly only on 64-

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HIGH 7.8DOWNGRADE

CVE-2007-0157 is a high-severity flaw (CVSS 7.8) affecting neon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Array index error in the uri_lookup function in the URI parser for neon 0.26.0 to 0.26.2, possibly only on 64-bit platforms, allows remote malicious servers to cause a denial of service (crash) via a URI with non-ASCII characters, which triggers a buffer under-read due to a type conversion error that generates a negative index.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Published	2007-01-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: neon

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2007-01-09 21:28 UTCPublished CVE record published
2026-06-16 22:35 UTCUpdated Record last modified

neon neon DOWNGRADE

Affected: 0.26.0 · 0.26.1 · 0.26.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.26.0

1. Check installed version

apt-cache policy neon || rpm -q neon || neon --version

2. No fixed release: DOWNGRADE to a release before 0.26.0 (Debian / Ubuntu)

apt-cache madison neon sudo apt install neon=<VERSION_BEFORE_0.26.0> sudo apt-mark hold neon

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list neon sudo dnf downgrade neon-<VERSION_BEFORE_0.26.0> sudo dnf versionlock add neon

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2007-0157?

neon: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-0157 being exploited?

CVE-2007-0157 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-2007-0157 affect?

CVE-2007-0157 affects neon. Severity is high (CVSS 7.8). Array index error in the uri_lookup function in the URI parser for neon 0.26.0 to 0.26.2, possibly only on 64-bit platforms, allows remote malicious servers to cause a denial of service (crash) via a URI with non-ASCII characters, which tri

How urgent is CVE-2007-0157?

Priority 48/100. High severity

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References

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