CVE-2013-0270

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 3.2% (87th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 3.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in OpenStack Keystone. A remote attacker could exploit this vulnerability by sending a large HTTP request, specifically by providing a long tenant name when requesting a token. This could lead to a denial of service, consuming excessive CPU and memory resources on the affected system.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation3% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
3.2%
EPSS %ILE
87th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

April 12, 2013

Last Modified

July 30, 2026

Advisory Details (7)

Auto-updated Apr 30, 2026
Patch available. Sources: redhat.
redhatMentions a patch (unverified)

909012 – (CVE-2013-0270) CVE-2013-0270 OpenStack Keystone: Large HTTP request DoS

https://bugzilla.redhat.com/show_bug.cgi?id=909012
generic

Bug #1099025 “block really large requests” : Bugs : OpenStack Identity (keystone)

https://bugs.launchpad.net/keystone/+bug/1099025
generic
http://rhn.redhat.com/errata/RHSA-2013-0708.html
generic

2013.1 "grizzly" : Series grizzly : OpenStack Identity (keystone)

https://launchpad.net/keystone/grizzly/2013.1
generic

Merge "Add size validations for /tokens." into stable/folsom · openstack/keystone@82c87e5 · GitHub

https://github.com/openstack/keystone/commit/82c87e5638ebaf9f166a9b07a0155291276d6fdc
generic

Limit the size of HTTP requests. · openstack/keystone@7691276 · GitHub

https://github.com/openstack/keystone/commit/7691276b869a86c2b75631d5bede9f61e030d9d8
redhatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2013-0270

Vendor Advisories for CVE-2013-0270(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 2013.1.1-2: fixed in 2013.1.1-2
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 2013.1.1-2: fixed in 2013.1.1-2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 2013.1.1-2: fixed in 2013.1.1-2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 2013.1.1-2: fixed in 2013.1.1-2
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
keystone—
  • every version up to 8.0.0a0: fixed in 8.0.0a0
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 18× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 149 total refreshes for this CVE.

  1. 2026-10-09 20:00 UTCEPSS rescore
  2. 2026-10-09 15:58 UTCOSV refresh
  3. 2026-10-08 16:34 UTCEPSS rescore
  4. 2026-10-07 23:39 UTCEPSS rescore
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  9. 2026-09-29 08:34 UTCEG score recompute
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  13. 2026-09-19 23:45 UTCOSV refresh
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  25. 2026-09-01 03:04 UTCOSV refresh
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  1. 2026-08-27 14:20 UTCEPSS rescore
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  20. 2026-07-30 14:10 UTCEG score recompute
  21. 2026-07-30 01:26 UTCEPSS rescore
  22. 2026-07-28 15:31 UTCEPSS rescore
  23. 2026-07-25 14:12 UTCEPSS rescore
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  25. 2026-07-23 01:09 UTCEG score recompute
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  27. 2026-07-22 21:51 UTCEG score recompute
  28. 2026-07-22 14:04 UTCEPSS rescore
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  30. 2026-07-22 13:18 UTCOSV refresh
  31. 2026-07-21 15:21 UTCEPSS rescore
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  48. 2026-07-06 02:19 UTCEPSS rescore
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  50. 2026-07-05 08:59 UTCOSV refresh
  51. 2026-07-05 02:26 UTCEPSS rescore
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  75. 2026-06-16 20:05 UTCOSV refresh

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Frequently asked(5)

What is CVE-2013-0270?
CVE-2013-0270 is a medium vulnerability published on April 12, 2013. A flaw was found in OpenStack Keystone. A remote attacker could exploit this vulnerability by sending a large HTTP request, specifically by providing a long tenant name when requesting a token. This could lead to a denial of service, consuming excessive CPU and memory resources on the affected…
When was CVE-2013-0270 disclosed?
CVE-2013-0270 was first published on April 12, 2013, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-0270 actively exploited?
CVE-2013-0270 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.2% probability of exploitation in the next 30 days (87th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2013-0270?
CVE-2013-0270 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2013-0270?
A fix for CVE-2013-0270 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2013-0270 are linked in the Vendor Advisories panel on this page.

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