CVE-2020-11728: An issue was discovered in DAViCal Andrew's Web Libraries (AWL) through 0.60

Q: How do I fix CVE-2020-11728?

andrew\'s web libraries: upgrade to newer than 0.60; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2020-11728 being exploited?

CVE-2020-11728 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-2020-11728 affect?

CVE-2020-11728 affects andrew\'s web libraries, debian linux. Severity is high (CVSS 7.5). An issue was discovered in DAViCal Andrew's Web Libraries (AWL) through 0.60. Session management does not use a sufficiently hard-to-guess session key. Anyone who can guess the microsecond time (and the incrementing session_id) can imperson

Q: How urgent is CVE-2020-11728?

Priority 55/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.5REMOTEWATCHLISTUPGRADEMITIGATE

CVE-2020-11728 is a high-severity flaw (CVSS 7.5) affecting andrew\'s web libraries, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in DAViCal Andrew's Web Libraries (AWL) through 0.60. Session management does not use a sufficiently hard-to-guess session key. Anyone who can guess the microsecond time (and the incrementing session_id) can impersonate a session.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-384
Published	2020-04-15
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: davical · debian

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

Am I affected?

Timeline

2020-04-15 16:15 UTCPublished CVE record published
2026-06-17 02:50 UTCUpdated Record last modified

davical andrew\'s web libraries UPGRADE

Affected: <= 0.60

Fixed in: newer than 0.60

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy andrews-web-libraries || rpm -q andrews-web-libraries || andrews-web-libraries --version

2. UPGRADE to newer than 0.60 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade andrews-web-libraries

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade andrews-web-libraries

Note

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

debian debian linux MITIGATE

Affected: 8.0 · 9.0 · 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

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.

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-2020-11728?

andrew\'s web libraries: upgrade to newer than 0.60; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-11728 being exploited?

CVE-2020-11728 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-2020-11728 affect?

CVE-2020-11728 affects andrew\'s web libraries, debian linux. Severity is high (CVSS 7.5). An issue was discovered in DAViCal Andrew's Web Libraries (AWL) through 0.60. Session management does not use a sufficiently hard-to-guess session key. Anyone who can guess the microsecond time (and the incrementing session_id) can imperson

How urgent is CVE-2020-11728?

Priority 55/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2020-11729 CRITICAL 9.8 UPGRADE MITIGATE An issue was discovered in DAViCal Andrew's Web Libraries (AWL) through 0.60

References

← Back to latest CVEs