9.8

CVE-2020-1944: apache traffic_server HTTP Request/Response Smuggling

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2020-1944DEBIAN-CVE-2020-1944
Published 23-03-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-1944 is a critical (CVSS 9.8) HTTP Request/Response Smuggling vulnerability in apache traffic_server. EPSS estimates a 2.73% chance of exploitation in the next 30 days, higher than 85.8% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.73%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DSA-4672-1

Timeline

  1. 23-03-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

There is a vulnerability in Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5 with a smuggling attack and Transfer-Encoding and Content length headers. Upgrade to versions 7.1.9 and 8.0.6 or later versions.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.73%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.73% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.73%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Apache1 product
  • traffic_server≥ 6.0.0, ≤ 6.2.3 | ≥ 7.0.0, ≤ 7.1.8 | ≥ 8.0.0, ≤ 8.0.5
Ubuntu1 product
  • trafficserverAll versions (No fix recorded)

3 vendors · 4 products

References

5 links