CVE-2018-1000885: PHKP version including commit 88fd9cfdf14ea4b6ac3e3967feea7bcaabb6f03b contains a Improper Neutralization of S

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CRITICAL 9.8REMOTEMITIGATE

CVE-2018-1000885 is a critical-severity flaw (CVSS 9.8) affecting phkp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHKP version including commit 88fd9cfdf14ea4b6ac3e3967feea7bcaabb6f03b contains a Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in function pgp_exec() phkp.php:98 that can result in It is possible to manipulate gpg-keys or execute commands remotely. This attack appear to be exploitable via HKP-Api: /pks/lookup?search.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Weakness	CWE-78
Published	2018-12-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: phkp project

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

Am I affected?

Timeline

2018-12-20 21:29 UTCPublished CVE record published
2026-06-17 01:33 UTCUpdated Record last modified

phkp project phkp 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 phkp || rpm -q phkp || phkp --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2018-1000885?

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

Is CVE-2018-1000885 being exploited?

CVE-2018-1000885 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-2018-1000885 affect?

CVE-2018-1000885 affects phkp. Severity is critical (CVSS 9.8). PHKP version including commit 88fd9cfdf14ea4b6ac3e3967feea7bcaabb6f03b contains a Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in function pgp_exec() phkp.php:98 that can result in It is

How urgent is CVE-2018-1000885?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2019-1010179 CRITICAL 9.8 MITIGATE PHKP including commit 88fd9cfdf14ea4b6ac3e3967feea7bcaabb6f03b is affected by: Improper Neutralization of Spec

References

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